Certified Medical Coding Specialist (CMCS) — Questions and Answers

Question 1: Which federal statute makes it illegal to knowingly and willfully offer, pay, solicit, or receive anything of value to induce or reward referrals of items or services covered by federal healthcare programs?

Anti-Kickback Statute (42 USC 1320a-7b(b)) (Correct answer)
Stark Law
False Claims Act
Civil Monetary Penalties Law

Correct answer: Anti-Kickback Statute (42 USC 1320a-7b(b))

The Anti-Kickback Statute is a criminal statute that prohibits offering, paying, soliciting, or receiving remuneration to induce or reward federal healthcare program referrals.

Question 2: A compliance officer discovers that a coder has been miscoding diagnoses to meet LCD requirements. What is the FIRST required action under a robust compliance program?

Report directly to law enforcement
Recode all claims and submit corrections without investigation
Investigate the scope of the problem internally (Correct answer)
Terminate the coder immediately

Correct answer: Investigate the scope of the problem internally

A compliance program requires a thorough internal investigation to determine the scope, root cause, and whether it was systemic before corrective actions are taken.

Question 3: A coder assigns an E/M code based on medical decision making (MDM). Which of the following represents 'high complexity' MDM?

One stable chronic illness managed well
Threat to life or bodily function requiring urgent decision-making (Correct answer)
One acute uncomplicated illness
Two or more self-limited problems

Correct answer: Threat to life or bodily function requiring urgent decision-making

High complexity MDM involves problems that pose a threat to life or bodily function and require extensive data review and high-risk management.

Question 4: Which organ is responsible for producing insulin, relevant when coding diabetes mellitus?

Pancreas (Correct answer)
Adrenal gland
Liver
Thyroid gland

Correct answer: Pancreas

The pancreatic beta cells produce insulin; failure of this function leads to diabetes mellitus, coded under ICD-10-CM category E10–E13.

Question 5: Which federal law imposes civil monetary penalties for knowingly submitting false risk adjustment data to Medicare Advantage?

The Affordable Care Act Section 1557
The False Claims Act (FCA) (Correct answer)
The Stark Law
HIPAA Privacy Rule

Correct answer: The False Claims Act (FCA)

The False Claims Act allows the government to pursue civil penalties and treble damages for knowingly submitting false or fraudulent claims, including risk adjustment data.

Question 6: In risk adjustment, what does the term 'prospective' risk adjustment mean?

Diagnoses are coded after services are rendered
Payment is adjusted based on prior year's diagnoses to set current year capitation (Correct answer)
Payment is adjusted after reviewing current year's utilization
Risk scores are calculated only at year end

Correct answer: Payment is adjusted based on prior year's diagnoses to set current year capitation

Prospective risk adjustment uses prior year diagnosis data to set the current year's capitation payment rates.

Question 7: The combining form 'cardi/o' refers to:

Heart (Correct answer)
Vein
Stomach
Artery

Correct answer: Heart

The combining form cardi/o refers to the heart, as in cardiomyopathy (disease of the heart muscle) and cardiology.

Question 8: Which ICD-10-CM code is used to report a principal diagnosis when the patient is admitted for chemotherapy?

Z51.11 (Correct answer)
C80.1
Z51.12
Z08

Correct answer: Z51.11

Z51.11 (encounter for antineoplastic chemotherapy) is sequenced as the principal diagnosis when chemotherapy is the reason for the encounter.

Question 9: Which HCPCS Level II section covers vision, hearing, and speech-language pathology services?

P codes
H codes
T codes
V codes (Correct answer)

Correct answer: V codes

V codes cover vision services, hearing services, and speech-language pathology services in HCPCS Level II.

Question 10: When a coder uses a clinical decision support tool whose recommendations are based on aggregated peer-reviewed research, this is an example of applying which level of evidence?

Expert consensus (Level V)
Research-integrated evidence synthesis (Level II–III) (Correct answer)
Anecdotal clinical experience (Level VI)
Single expert opinion (Level IV)

Correct answer: Research-integrated evidence synthesis (Level II–III)

Tools built on aggregated peer-reviewed research represent synthesized evidence at Levels II–III, higher than expert opinion or anecdotal experience.

Question 11: The global surgical package typically includes all of the following EXCEPT:

Preoperative care one day before surgery
Intraoperative services
Treatment of unrelated conditions during the postoperative period (Correct answer)
Uncomplicated postoperative follow-up visits

Correct answer: Treatment of unrelated conditions during the postoperative period

Treatment of conditions unrelated to the original surgery is not included in the global surgical package and may be billed separately.

Question 12: A patient is admitted with chest pain. During the stay, the chest pain is determined to be due to acute myocardial infarction. What is the principal diagnosis?

Chest pain
Angina pectoris
Acute myocardial infarction (Correct answer)
Both coded equally

Correct answer: Acute myocardial infarction

Once the definitive diagnosis (AMI) is established, it replaces the symptom (chest pain) as the principal diagnosis for inpatient coding.

Question 13: In ICD-10-CM, what does the 7th character 'A' typically indicate in injury codes?

Active treatment
Initial encounter (Correct answer)
Subsequent encounter
Sequela

Correct answer: Initial encounter

The 7th character 'A' in ICD-10-CM injury codes designates the initial encounter for active treatment.

Question 14: A patient contacts the billing office claiming they were billed for a service they did not receive. Which step should the coder take first?

Tell the patient to dispute the charge with their insurer
Review the medical record and claim to verify whether the service was documented and billed correctly (Correct answer)
Immediately issue a refund to the patient
Escalate to the legal team without investigation

Correct answer: Review the medical record and claim to verify whether the service was documented and billed correctly

The coder must first review the medical record and claim to determine whether the billing was accurate before taking further action.

Question 15: Which CMS program uses Recovery Audit Contractors (RACs) to identify and correct improper Medicare payments?

Recovery Audit Program (Correct answer)
Zone Program Integrity Contractor (ZPIC)
Comprehensive Error Rate Testing (CERT)
Targeted Probe and Educate (TPE)

Correct answer: Recovery Audit Program

The Recovery Audit Program uses RACs to identify and recover improper Medicare payments made to healthcare providers.

Question 16: A research team calculates the positive predictive value (PPV) of an algorithm that flags potentially miscoded DRGs. PPV measures which of the following?

The proportion of algorithm flags that are true errors (Correct answer)
The overall accuracy of the algorithm
The proportion of actual errors the algorithm correctly identifies
The rate of false negatives in the dataset

Correct answer: The proportion of algorithm flags that are true errors

Positive predictive value is the proportion of positive test results (flags) that are true positives (actual errors).

Question 17: A medical coder uses encoder software that suggests additional codes not documented in the chart. The coder should:

Add the suggested codes to maximize reimbursement
Query the provider to clarify if the conditions are present and documented (Correct answer)
Ignore the suggestions entirely
Add codes only if the patient has a history of those conditions

Correct answer: Query the provider to clarify if the conditions are present and documented

Codes may only be assigned based on documentation; encoder suggestions prompt the coder to query the provider if clinical indicators suggest an undocumented condition.

Question 18: The phrase "not elsewhere classified" is used in Volume 2 to indicate that there isn't a separate classification for the condition.

NOC
NCC
NEC (Correct answer)
NOS

Correct answer: NEC

NEC stands for 'Not Elsewhere Classified' in medical coding. It is used when the documentation provides a specific diagnosis, but the coding system does not offer a more precise code to fully describe that condition. This directs the coder to use the most specific available code, even if it's not perfectly detailed.

Question 19: Which HCPCS modifier indicates that a procedure was performed on the left side of the body?

LT (Correct answer)
LS
LE
LA

Correct answer: LT

The modifier LT indicates that the procedure was performed on the left side of the body, while RT indicates the right side.

Question 20: A coder discovers a recurring documentation pattern that leads to undercoding. Who should be notified first?

The patient
The state medical board
The insurance payer
The attending physician and coding supervisor (Correct answer)

Correct answer: The attending physician and coding supervisor

Systematic undercoding should be reported to the physician and coding supervisor so the root cause can be addressed internally.

Question 21: A hospital's compliance program identifies a pattern of billing for services not documented. Under the False Claims Act, what is the potential penalty per false claim?

$500 to $1,000
$100,000 to $500,000
$10,000 to $50,000
$2,587 to $25,868 (Correct answer)

Correct answer: $2,587 to $25,868

The False Claims Act imposes civil monetary penalties of $2,587 to $25,868 per false claim (adjusted annually for inflation), plus treble damages.

Question 22: A surgeon performs a laparoscopic appendectomy that is converted to an open procedure. How is this coded?

Code the laparoscopic attempt only (44970)
Code the open appendectomy with modifier -22
Code both the laparoscopic and open procedures
Code the open appendectomy only (44950) (Correct answer)

Correct answer: Code the open appendectomy only (44950)

When a laparoscopic procedure is converted to open, only the open procedure code is reported; the conversion is not separately billable.

Question 23: A compliance program's effectiveness is BEST demonstrated by:

The number of policies written
The size of the compliance department
Documented corrective actions and measurable improvements in error rates (Correct answer)
The frequency of staff meetings

Correct answer: Documented corrective actions and measurable improvements in error rates

Documented corrective actions and measurable reductions in error rates are the strongest evidence that a compliance program is actually working.

Question 24: What is the correct format for a HCPCS Level II code?

One letter followed by four numbers (Correct answer)
One number followed by four letters
Three letters followed by two numbers
Two letters followed by three numbers

Correct answer: One letter followed by four numbers

HCPCS Level II codes consist of one letter (A–V) followed by four numbers, such as E0601 for a CPAP device.

Question 25: A telehealth encounter is documented in the EHR. Which modifier is typically appended to indicate the service was furnished via telehealth?

-59
-51
-GT or -95 (Correct answer)
-25

Correct answer: -GT or -95

Modifier GT (via interactive audio and video telecommunications systems) and modifier 95 (synchronous telemedicine service) indicate telehealth delivery of services.

Question 26: A prospective coding audit collects data on new patient encounters as they occur. Compared to retrospective audits, prospective audits are more useful for:

Analyzing historical trends over many years
Reducing data collection costs
Providing real-time feedback to prevent future errors (Correct answer)
Using larger, pre-existing datasets

Correct answer: Providing real-time feedback to prevent future errors

Prospective audits capture data as events occur, allowing immediate corrective feedback before claims are submitted.

Question 27: A provider documents 'history of MI' for a patient who had a myocardial infarction two years ago with no current symptoms. How should this be coded?

As ischemic heart disease, unspecified
It should not be coded at all
As a current acute MI
As old myocardial infarction using the appropriate personal history code (Correct answer)

Correct answer: As old myocardial infarction using the appropriate personal history code

An MI that occurred more than four weeks ago is coded as old or healed MI using the personal history or old MI code, not as acute.

Question 28: What is the significance of a code of conduct for Certified Medical Coding Specialist professionals?

It applies only to new practitioners
It limits professional freedom
It establishes expected behaviors and ethical standards that protect the public and profession (Correct answer)
It is merely symbolic

Correct answer: It establishes expected behaviors and ethical standards that protect the public and profession

This is fundamental to Certified Medical Coding Specialist practice. It establishes expected behaviors and ethical standards that protect the public and profession represents the professional standard for professional standards in the Certified Medical Coding Specialist certification framework.

Question 29: Which CPT section contains codes for office visits and hospital consultations?

Medicine (90000–99199)
Surgery (10000–69999)
Radiology (70000–79999)
Evaluation and Management (99202–99499) (Correct answer)

Correct answer: Evaluation and Management (99202–99499)

Evaluation and Management (E/M) codes (99202–99499) cover office visits, hospital visits, consultations, and other patient encounters.

Question 30: The combining form 'pulmon/o' refers to which organ?

Heart
Spleen
Lung (Correct answer)
Kidney

Correct answer: Lung

Pulmon/o is the combining form for lung, as in pulmonary (relating to the lungs) and pulmonology.

Question 31: Which HCPCS Level II code letter prefix is used for durable medical equipment (DME)?

K
L
E (Correct answer)
A

Correct answer: E

HCPCS Level II codes beginning with 'E' are designated for durable medical equipment.

Question 32: A 7-year-old comes in for a round of shots. The patient is given DTaP, MMR, and vaccination advice. For this procedure, the appropriate CPT code is:

90471, 90472
90460, 90461
90460x2, 90461x4 (Correct answer)
90460, 90461x5

Correct answer: 90460x2, 90461x4

CPT codes 90460 and 90461 are used for immunization administration with counseling for patients 18 years and younger. Code 90460 is for the first component of each vaccine, and 90461 is for each additional component. DTaP is a 3-component vaccine (Diphtheria, Tetanus, acellular Pertussis), and MMR is also a 3-component vaccine (Measles, Mumps, Rubella). Therefore, for DTaP, you would code one 90460 and two 90461s. For MMR, you would also code one 90460 and two 90461s, resulting in a total of two 90460s and four 90461s.

Question 33: A hospital coding department adopts a clinical documentation improvement (CDI) software tool. What is the PRIMARY goal of this technology?

Managing provider scheduling and availability
Automating claim submission to reduce staff workload
Identifying documentation gaps to improve specificity and accuracy before coding (Correct answer)
Generating patient satisfaction surveys after discharge

Correct answer: Identifying documentation gaps to improve specificity and accuracy before coding

CDI software analyzes clinical documentation in real-time to identify opportunities for clarification, helping ensure the record supports accurate, complete code assignment and appropriate reimbursement.

Question 34: Which HCPCS Level II code range covers ambulance and transportation services?

T1000–T9999
E0100–E9999
A0000–A0999 (Correct answer)
G0000–G9999

Correct answer: A0000–A0999

A0000–A0999 covers transportation services including ambulance services and non-emergency medical transport.

Question 35: Which term describes the surgical creation of a new opening into the colon?

Colectomy
Colostomy (Correct answer)
Colonoscopy
Coloplasty

Correct answer: Colostomy

A colostomy is the surgical creation of an opening (stoma) from the colon to the abdominal wall, using the suffix -ostomy (new opening).

Question 36: Which organization administers the Certified Medical Coding Specialist (CMCS) credential?

American Health Information Management Association (AHIMA)
Medical Association of Billers (MAB) (Correct answer)
National Healthcareer Association (NHA)
American Academy of Professional Coders (AAPC)

Correct answer: Medical Association of Billers (MAB)

The CMCS credential is administered by the Medical Association of Billers (MAB).

Question 37: The suffix '-ectomy' in medical terminology means:

Surgical repair
Surgical removal (Correct answer)
Surgical incision
Surgical creation of an opening

Correct answer: Surgical removal

The suffix -ectomy means excision or surgical removal, as in appendectomy (removal of the appendix).

Question 38: When evaluating the quality of a coding research article, which element of the PICO framework represents the target group being studied?

I — Intervention
O — Outcome
P — Population/Patient (Correct answer)
C — Comparison

Correct answer: P — Population/Patient

In PICO, 'P' refers to the Population or Patient group that is the focus of the clinical question or study.

Question 39: In ICD-10-CM, sequela codes are identified by which 7th character?

A
Q
D
S (Correct answer)

Correct answer: S

The 7th character 'S' designates a sequela — a condition that is the late effect of a previous injury or illness.

Question 40: What is the function of a 'superbill' in a medical practice's digital workflow?

A payer-specific fee schedule
A monthly summary of all outstanding patient balances
A document listing services rendered during a visit used to generate charges (Correct answer)
An electronic prior authorization request form

Correct answer: A document listing services rendered during a visit used to generate charges

A superbill (encounter form) is a structured document completed after a visit listing diagnoses and procedures, serving as the source for charge entry into the PMS.

Question 41: What is the primary purpose of regulatory compliance in Certified Medical Coding Specialist practice?

To limit competition
To benefit regulators only
To protect public safety, ensure quality standards, and maintain professional accountability (Correct answer)
To create bureaucratic burden

Correct answer: To protect public safety, ensure quality standards, and maintain professional accountability

This is fundamental to Certified Medical Coding Specialist practice. To protect public safety, ensure quality standards, and maintain professional accountability represents the professional standard for regulatory in the Certified Medical Coding Specialist certification framework.

Question 42: A hospital uses encoder software that suggests codes based on clinical terminology in physician notes. A study evaluating this tool's accuracy would BEST measure which outcome?

Time to code submission
Physician documentation completeness
Coder satisfaction scores
Concordance between encoder-suggested and manually assigned codes (Correct answer)

Correct answer: Concordance between encoder-suggested and manually assigned codes

Comparing encoder-suggested codes to expert-assigned codes (concordance rate) directly measures the tool's coding accuracy.

Question 43: In anatomical position, the term 'medial' means:

Farther from the midline of the body
Toward the front of the body
Toward the back of the body
Closer to the midline of the body (Correct answer)

Correct answer: Closer to the midline of the body

Medial describes a position closer to the body's midline, while lateral describes a position farther from the midline.

Question 44: Which ICD-10-CM code range covers neoplasms?

D50–D89
B00–B99
C00–D49 (Correct answer)
E00–E89

Correct answer: C00–D49

Chapter 2 of ICD-10-CM (C00–D49) covers all neoplasms, including malignant, benign, and neoplasms of uncertain behavior.

Question 45: Coding from a superbill alone without reviewing the medical record is problematic because:

HIPAA prohibits the use of superbills for coding
Superbills are not accepted by payers
Superbills are only valid for inpatient coding
Superbills may not capture all conditions or correct specificity (Correct answer)

Correct answer: Superbills may not capture all conditions or correct specificity

Superbills are summary tools that may omit detail needed for accurate, complete coding from the full medical record.

Question 46: The medical term 'nephro-' refers to which organ?

Gallbladder
Liver
Kidney (Correct answer)
Bladder

Correct answer: Kidney

The prefix 'nephro-' refers to the kidney, as seen in nephrology (study of kidneys) and nephrectomy (removal of a kidney).

Question 47: What does the acronym HCPCS stand for?

Hospital Common Procedural Coding Standard
Healthcare Coding and Payment Classification System
Healthcare Common Procedure Coding System (Correct answer)
Health Care Procedure Classification System

Correct answer: Healthcare Common Procedure Coding System

HCPCS stands for Healthcare Common Procedure Coding System, the standardized system used for Medicare and Medicaid billing.

Question 48: Which HCPCS Level II code section covers Durable Medical Equipment (DME)?

K codes
L codes
A codes
E codes (Correct answer)

Correct answer: E codes

E codes (E0100–E9999) cover Durable Medical Equipment such as wheelchairs, hospital beds, and walkers.

Question 49: When a coder queries a physician about an unclear diagnosis, the query must be:

Submitted only after the claim is billed
Verbal only to avoid documentation
Non-leading, presenting clinical indicators without suggesting a specific answer (Correct answer)
Leading, to guide the physician to the most specific code

Correct answer: Non-leading, presenting clinical indicators without suggesting a specific answer

AHIMA and ACDIS guidelines require physician queries to be non-leading, presenting clinical indicators and allowing the physician to respond without bias.

Question 50: When a physician documents 'acute on chronic systolic heart failure,' a coder should:

Assign a combination code that captures both the acute and chronic components (Correct answer)
Query the physician because the two terms cannot be coded together
Assign only the acute code because it is the current presentation
Assign only the chronic code as the underlying condition

Correct answer: Assign a combination code that captures both the acute and chronic components

ICD-10-CM provides combination codes for conditions such as acute on chronic heart failure that capture both components in a single code.

Question 51: A chi-square test is used in a coding accuracy study comparing error rates between two facilities. This test is used because the outcome variable is:

Continuous and normally distributed
Categorical (correct vs. incorrect codes) (Correct answer)
Time-to-event data
Ranked on an ordinal scale

Correct answer: Categorical (correct vs. incorrect codes)

Chi-square tests compare distributions of categorical variables, such as whether a code was correct or incorrect.

Question 52: What is 'information blocking' as defined by the 21st Century Cures Act?

Restricting EHR access to credentialed users only
Blocking spam emails containing patient data
Encrypting PHI to prevent unauthorized access
Practices that unreasonably interfere with access, exchange, or use of electronic health information (Correct answer)

Correct answer: Practices that unreasonably interfere with access, exchange, or use of electronic health information

Information blocking refers to practices by providers, health IT developers, or HIEs that interfere with the lawful access, exchange, or use of EHI, which is prohibited by the 21st Century Cures Act.

Question 53: What is the value of written documentation in Certified Medical Coding Specialist professional communication?

It is only for formal occasions
It creates permanent records, ensures clarity, and provides legal protection (Correct answer)
It replaces verbal communication
It is optional

Correct answer: It creates permanent records, ensures clarity, and provides legal protection

This is fundamental to Certified Medical Coding Specialist practice. It creates permanent records, ensures clarity, and provides legal protection represents the professional standard for communication in the Certified Medical Coding Specialist certification framework.

Question 54: The suffix '-plasty' in medical terms refers to:

Disease or abnormal condition
Surgical repair or reconstruction (Correct answer)
Surgical removal
Inflammation

Correct answer: Surgical repair or reconstruction

The suffix -plasty means surgical repair or reconstruction, as in rhinoplasty (nose reshaping) or arthroplasty (joint reconstruction).

Question 55: A coding audit reveals that a coder consistently upcodes evaluation and management services. What is the MOST appropriate corrective action?

Report the coder to the OIG
Suspend all claims submitted by the coder
Terminate the coder immediately
Provide targeted education and reaudit within 90 days (Correct answer)

Correct answer: Provide targeted education and reaudit within 90 days

Targeted education followed by a reaudit is the standard corrective action for identified coding errors, allowing the coder to improve while confirming the issue is resolved.

Question 56: HCPCS Level II S codes are primarily used by which payers?

Non-Medicare payers such as private insurers and managed care organizations (Correct answer)
Medicare fee-for-service programs
Skilled nursing facility Medicaid programs only
State pharmacy assistance programs exclusively

Correct answer: Non-Medicare payers such as private insurers and managed care organizations

S codes are temporary national codes used primarily by non-Medicare payers such as private health insurers and managed care organizations.

Question 57: What is the role of a 'clearinghouse' in the electronic claims submission process?

A government agency that approves all electronic transactions
An intermediary that translates and routes claims between providers and payers (Correct answer)
A software tool that assigns CPT codes from clinical documentation
A database storing all payer fee schedules

Correct answer: An intermediary that translates and routes claims between providers and payers

A clearinghouse acts as a middleman that receives claims from providers, checks them for errors, translates them into payer-specific formats, and routes them to the appropriate insurance companies.

Question 58: Which measure is MOST commonly used to evaluate the effectiveness of a coding compliance program over time?

Number of coders on staff
Total reimbursement received quarterly
Number of claims submitted per month
Trending error rates across multiple audit periods (Correct answer)

Correct answer: Trending error rates across multiple audit periods

Trending error rates across audit periods allows compliance officers to evaluate whether education and corrective actions are improving coding accuracy.

Question 59: Which of the following best describes 'unbundling' in the context of coding quality?

Billing component procedures separately when a comprehensive code exists (Correct answer)
Using an unspecified code when a more specific one is available
Reporting the same service twice on the same date
Assigning a single comprehensive code when multiple codes are required

Correct answer: Billing component procedures separately when a comprehensive code exists

Unbundling involves billing component parts of a procedure individually rather than using the single comprehensive code, resulting in higher reimbursement.

Question 60: A coder finds conflicting guidance between an AHA Coding Clinic and a payer LCD for the same condition. Which source should take precedence for inpatient hospital coding?

Whichever source was published most recently
LCD, because payer requirements govern reimbursement
AHA Coding Clinic, as the official ICD-10-CM guidance (Correct answer)
CMS transmittals only

Correct answer: AHA Coding Clinic, as the official ICD-10-CM guidance

AHA Coding Clinic is the official guidance resource for ICD-10-CM/PCS and governs correct code assignment regardless of payer policies.

Question 61: A coding researcher uses ICD-10-CM codes to identify a study cohort of patients with sepsis. A key limitation of using administrative claims data for this purpose is:

ICD-10-CM codes cannot identify sepsis
Claims data are not available for inpatient stays
Coding inaccuracies may misclassify patients, introducing selection bias (Correct answer)
Claims data lack patient demographic information

Correct answer: Coding inaccuracies may misclassify patients, introducing selection bias

Administrative data quality depends on coding accuracy; miscoded diagnoses can cause patients to be incorrectly included or excluded from research cohorts.

Question 62: What is the primary purpose of a Hierarchical Condition Category (HCC) in risk adjustment?

To determine hospital reimbursement rates
To assign DRG weights for inpatient stays
To categorize surgical procedures
To predict future healthcare costs based on diagnosis coding (Correct answer)

Correct answer: To predict future healthcare costs based on diagnosis coding

HCCs group related diagnoses to predict expected healthcare expenditures for risk-adjusted capitation payments.

Question 63: A patient is admitted for a planned right total knee arthroplasty. Postoperatively, the patient develops a pulmonary embolism. How is the PE coded?

As a postoperative complication code with the TKA as secondary
As a secondary diagnosis since the TKA was the planned reason for admission (Correct answer)
Not coded since it is a complication of surgery
As the principal diagnosis since it was the most serious complication

Correct answer: As a secondary diagnosis since the TKA was the planned reason for admission

The total knee arthroplasty remains the principal diagnosis; the postoperative PE is coded as a secondary complication (I26.xx) along with a complication code if applicable.

Question 64: How should an Certified Medical Coding Specialist professional present complex information to non-experts?

Translate into accessible language, use visuals, and check for understanding (Correct answer)
Skip complex topics entirely
Provide written reports only
Use full technical terminology

Correct answer: Translate into accessible language, use visuals, and check for understanding

This is fundamental to Certified Medical Coding Specialist practice. Translate into accessible language, use visuals, and check for understanding represents the professional standard for communication in the Certified Medical Coding Specialist certification framework.

Question 65: Which organization is responsible for maintaining and updating HCPCS Level II codes?

American Medical Association (AMA)
American Academy of Professional Coders (AAPC)
Centers for Medicare & Medicaid Services (CMS) (Correct answer)
American Health Information Management Association (AHIMA)

Correct answer: Centers for Medicare & Medicaid Services (CMS)

CMS (Centers for Medicare & Medicaid Services) is responsible for maintaining and updating HCPCS Level II codes.

Question 66: Which ICD-10-CM code category covers sepsis?

A41 (Correct answer)
T81
R65
J44

Correct answer: A41

Category A41 in ICD-10-CM covers sepsis due to various organisms, such as A41.9 for unspecified sepsis.

Question 67: When coding a patient with essential hypertension and chronic kidney disease stage 3, the coder should assign:

I10 and N18.3 separately
N18.3 only
I12.9 — hypertensive chronic kidney disease with stage 3 CKD (Correct answer)
I10 only

Correct answer: I12.9 — hypertensive chronic kidney disease with stage 3 CKD

ICD-10-CM presumes a causal relationship between hypertension and CKD, requiring the combination code I12.9 plus N18.3.

Question 68: What is the importance of data security in Certified Medical Coding Specialist digital applications?

Protecting sensitive information from unauthorized access, breaches, and loss is essential (Correct answer)
Only financial data needs protection
Security is unnecessary for professional data
Security slows down work

Correct answer: Protecting sensitive information from unauthorized access, breaches, and loss is essential

This is fundamental to Certified Medical Coding Specialist practice. Protecting sensitive information from unauthorized access, breaches, and loss is essential represents the professional standard for technology in the Certified Medical Coding Specialist certification framework.

Question 69: When coding obstetric cases, which ICD-10-CM chapter takes sequencing priority?

The chapter specific to the complicating condition
Chapter 16 — Conditions in the Perinatal Period
Chapter 18 — Symptoms and Signs
Chapter 15 — Pregnancy, Childbirth, and the Puerperium (O00–O9A) (Correct answer)

Correct answer: Chapter 15 — Pregnancy, Childbirth, and the Puerperium (O00–O9A)

Chapter 15 (O codes) takes sequencing priority for obstetric patients, as these codes reflect conditions complicating pregnancy.

Question 70: A Medicare patient receives an annual wellness visit (AWV) and also has an E/M service for a new complaint addressed during the same encounter. How is this billed?

Bill both without any modifier since they are different service types
Bill only the E/M — the AWV is lesser in value
Bill both the AWV and E/M with modifier -25 on the E/M (Correct answer)
Bill only the AWV — the E/M is bundled

Correct answer: Bill both the AWV and E/M with modifier -25 on the E/M

Both can be billed on the same day with modifier -25 appended to the E/M service to indicate it was a significant, separately identifiable service.

Question 71: Which data standard is used to transmit electronic health care claims between providers and payers in the US?

SNOMED CT
DICOM
HL7 FHIR
X12 837 (Correct answer)

Correct answer: X12 837

The X12 837 transaction set (837P for professional, 837I for institutional) is the HIPAA-mandated standard for electronic claim submission.

Question 72: A surgeon performs a complex repair of a 4.5 cm laceration of the neck and a simple repair of a 2.0 cm laceration of the arm during the same encounter. How are these coded?

Code both repairs separately using appropriate CPT codes (Correct answer)
Add the lengths together and code one repair code for 6.5 cm
Code only the complex repair since it is the more complex procedure
Code the complex repair and append modifier -51 to the simple repair

Correct answer: Code both repairs separately using appropriate CPT codes

Repairs of different complexity (simple vs. complex) at different anatomic sites are coded separately with their respective CPT codes.

Question 73: A physician performs a colonoscopy with biopsy and removal of two polyps via hot snare. Which CPT coding approach is correct?

Code only the polypectomy since it is the more complex procedure (Correct answer)
Code both the biopsy and the polypectomy with modifier -59
Code only the biopsy since it is the lesser procedure
Code the colonoscopy once with a bundling modifier

Correct answer: Code only the polypectomy since it is the more complex procedure

When a biopsy and polypectomy are performed at the same site, the polypectomy is the definitive procedure and the biopsy is not coded separately.

Question 74: In which body system would a coder find the gallbladder and bile ducts?

Lymphatic system
Hepatobiliary (digestive) system (Correct answer)
Endocrine system
Urinary system

Correct answer: Hepatobiliary (digestive) system

The gallbladder and bile ducts are part of the hepatobiliary system, which is a component of the digestive system.

Question 75: Which CPT modifier is used when a procedure is discontinued after anesthesia administration?

-53 (Correct answer)
-52
-73
-74

Correct answer: -53

Modifier -53 is used when a physician elects to terminate a surgical or diagnostic procedure after the patient has been prepared and anesthesia administered.

Question 76: Which anatomical plane divides the body into anterior (front) and posterior (back) portions?

Coronal (frontal) plane (Correct answer)
Transverse plane
Sagittal plane
Oblique plane

Correct answer: Coronal (frontal) plane

The coronal (frontal) plane divides the body into anterior and posterior sections, running vertically from side to side.

Question 77: A new coder is unsure how to code a complex case. The best course of action is to:

Submit the claim with incomplete codes and correct later
Guess and submit the claim to avoid delays
Ask a senior coder or supervisor for guidance and consult coding references (Correct answer)
Leave the case uncoded until the physician follows up

Correct answer: Ask a senior coder or supervisor for guidance and consult coding references

Consulting a senior coder and authoritative references ensures accuracy and is a professional standard practice.

Question 78: What is the purpose of a 'scrubber' in medical billing software?

To convert ICD-10 codes to ICD-9 for legacy payers
To automatically check claims for errors before submission to payers (Correct answer)
To remove duplicate patient records from the database
To encrypt patient data for HIPAA compliance

Correct answer: To automatically check claims for errors before submission to payers

A claim scrubber analyzes claims for coding errors, missing information, and payer-specific rule violations before submission to reduce denials.

Question 79: A HIM director reviews OIG compliance guidance before finalizing an internal audit plan. The primary reason to consult OIG resources is to:

Access benchmark DRG weight data by facility type
Determine CPT code valuation for physician services
Identify high-risk billing and coding areas targeted for federal scrutiny (Correct answer)
Obtain official ICD-10-CM code updates

Correct answer: Identify high-risk billing and coding areas targeted for federal scrutiny

The OIG Work Plan and compliance guidance identify billing and coding areas with the highest fraud and abuse risk, informing targeted internal audit priorities.

Question 80: A patient is admitted after a motor vehicle accident and sustains a closed femur fracture and a closed tibia fracture on the same leg. The femur fracture required ORIF. Which diagnosis is sequenced first?

The femur fracture since it was the most serious and required surgical intervention (Correct answer)
Either fracture, since UHDDS allows either to be principal
The external cause code for the MVA
The tibia fracture since it is the distal injury

Correct answer: The femur fracture since it was the most serious and required surgical intervention

The condition chiefly responsible for the admission — the femur fracture requiring ORIF — is selected as the principal diagnosis.

Question 81: What is the purpose of placeholder character 'X' in ICD-10-CM codes?

To allow for future expansion and maintain the required code length (Correct answer)
To signify a bilateral condition
To flag deleted codes
To indicate an unknown diagnosis

Correct answer: To allow for future expansion and maintain the required code length

The placeholder X is used in ICD-10-CM to allow codes to reach the required length and reserve space for future expansion.

Question 82: What is the consequence of non-compliance for Certified Medical Coding Specialist professionals?

Only verbal warnings
No significant consequences
Potential fines, license revocation, legal liability, and reputational damage (Correct answer)
Just additional paperwork

Correct answer: Potential fines, license revocation, legal liability, and reputational damage

This is fundamental to Certified Medical Coding Specialist practice. Potential fines, license revocation, legal liability, and reputational damage represents the professional standard for regulatory in the Certified Medical Coding Specialist certification framework.

Question 83: When a coding research study reports a p-value of 0.03, what does this indicate about the findings?

The study has a 3% error rate overall
The result is statistically significant at the 0.05 threshold (Correct answer)
There is a 3% chance the results are clinically significant
The effect size is small

Correct answer: The result is statistically significant at the 0.05 threshold

A p-value of 0.03 is below the conventional 0.05 significance threshold, indicating the result is statistically significant.

Question 84: A medical coder reviews a clinical study comparing ICD-10-CM coding accuracy between two hospital systems. This type of study is best classified as which research design?

Case report
Systematic review
Randomized controlled trial
Comparative observational study (Correct answer)

Correct answer: Comparative observational study

Comparing outcomes between two existing groups without random assignment is an observational comparative study design.

Question 85: A coder notices the operative report documents a cholecystectomy, but the discharge summary only mentions 'abdominal surgery.' What is the correct coding action?

Code 'abdominal surgery' as documented in the discharge summary
Code the cholecystectomy from the operative report (Correct answer)
Assign the most specific code from either document
Query the physician to reconcile the discrepancy

Correct answer: Code the cholecystectomy from the operative report

Operative reports are the primary source for procedure coding; the cholecystectomy documented there should be coded.

Question 86: Which of the following best describes the role of the UHDDS (Uniform Hospital Discharge Data Set) in evidence-based coding practice?

It establishes reimbursement rates for DRGs
It defines minimum data elements that must be reported for inpatient encounters (Correct answer)
It sets the national coding productivity standards
It governs outpatient E/M level selection

Correct answer: It defines minimum data elements that must be reported for inpatient encounters

UHDDS defines the minimum data elements required for inpatient hospital data reporting, including principal diagnosis and principal procedure.

Question 87: A practice implements a patient portal. Which HIPAA provision is MOST directly supported by allowing patients to view and download their records online?

Notice of Privacy Practices
Minimum Necessary Standard
Individual Right of Access (Correct answer)
Business Associate Agreement requirement

Correct answer: Individual Right of Access

HIPAA's individual right of access allows patients to inspect, obtain copies of, and transmit their PHI, which patient portals facilitate electronically.

Question 88: What is the primary difference between HCPCS Level I and HCPCS Level II codes?

Level I codes are numeric only; Level II codes are entirely alphabetic
Level I codes are CPT codes for physician services; Level II covers non-physician items and services (Correct answer)
Level I codes are used by hospitals; Level II by physicians only
Level I codes are maintained by CMS; Level II codes are maintained by the AMA

Correct answer: Level I codes are CPT codes for physician services; Level II covers non-physician items and services

HCPCS Level I consists of CPT codes for physician services, while Level II covers non-physician items like DME, supplies, drugs, and transportation.

Question 89: When a patient has both an acute and a chronic condition, ICD-10-CM guidelines state:

Only one code may be assigned
Always code only the acute condition
Always code only the chronic condition
Sequence the acute condition first if a combination code does not exist (Correct answer)

Correct answer: Sequence the acute condition first if a combination code does not exist

When separate codes exist for acute and chronic conditions, ICD-10-CM guidelines direct sequencing the acute condition first.

Question 90: A coder assigns a code for a higher-complexity procedure than what was actually performed to increase reimbursement. This is an example of:

Phantom billing
Unbundling
Upcoding (Correct answer)
Clustering

Correct answer: Upcoding

Upcoding involves billing for a more expensive service or higher-level code than what was actually provided or documented.

Question 91: A coder discovers that a 2019 AHA Coding Clinic edition conflicts with a 2023 edition on the same coding scenario. Which guidance should be followed?

The 2023 edition, as more recent guidance supersedes older guidance (Correct answer)
Neither — only CMS transmittals apply
The 2019 edition, as original guidance supersedes revisions
Either edition, as both are equally valid

Correct answer: The 2023 edition, as more recent guidance supersedes older guidance

More recent AHA Coding Clinic guidance supersedes older guidance on the same topic, as it reflects updated official interpretation.

Question 92: Under the Stark Law (physician self-referral law), a physician is generally prohibited from:

Billing Medicare for services performed in a hospital
Treating Medicare patients in a solo practice
Employing mid-level providers in their practice
Referring Medicare patients to entities in which they have a financial relationship (Correct answer)

Correct answer: Referring Medicare patients to entities in which they have a financial relationship

The Stark Law prohibits physicians from referring Medicare patients to entities with which the physician has a financial relationship, unless an exception applies.

Question 93: The term 'bilateral' in coding documentation means:

Pertaining to the right side only
Pertaining to or affecting both sides of the body (Correct answer)
Pertaining to the left side only
Pertaining to one side of the body

Correct answer: Pertaining to or affecting both sides of the body

Bilateral means both sides, and in coding it affects code selection — some procedures have distinct bilateral CPT codes or require modifier -50.

Question 94: What is the first step in risk assessment for Certified Medical Coding Specialist professionals?

Purchasing insurance
Delegating to others
Identifying potential hazards and vulnerabilities in the specific context (Correct answer)
Implementing controls immediately

Correct answer: Identifying potential hazards and vulnerabilities in the specific context

This is fundamental to Certified Medical Coding Specialist practice. Identifying potential hazards and vulnerabilities in the specific context represents the professional standard for risk management in the Certified Medical Coding Specialist certification framework.

Question 95: Q codes in HCPCS Level II are classified as which type of codes?

Local codes used by individual contractors
Temporary national codes (Correct answer)
Permanent national codes
DME MAC-specific codes

Correct answer: Temporary national codes

Q codes are temporary national codes assigned when a service does not yet have a permanent HCPCS code but a national code is needed.

Question 96: Which communication channel is most appropriate for transmitting PHI-related coding questions to a physician?

HIPAA-compliant secure messaging platform or internal EHR messaging (Correct answer)
Personal social media messaging
Verbal communication in a public hallway
Standard unencrypted text message

Correct answer: HIPAA-compliant secure messaging platform or internal EHR messaging

PHI must be transmitted only through HIPAA-compliant secure channels to protect patient privacy.

Question 97: The prefix 'brady-' in medical terminology means:

Fast
Slow (Correct answer)
Painful
Difficult

Correct answer: Slow

Brady- is a prefix meaning slow, as in bradycardia (slow heart rate).

Question 98: When a patient is seen for management of congestive heart failure and is also noted to have COPD that is monitored, which ICD-10-CM guidelines apply?

Do not code COPD unless it was treated with medication changes
Code CHF as principal and COPD as additional diagnosis since it affects management (Correct answer)
Code only the principal diagnosis of CHF
Code COPD first as it is a chronic condition

Correct answer: Code CHF as principal and COPD as additional diagnosis since it affects management

Both conditions should be coded when coexisting conditions affect patient management or require clinical evaluation during the encounter.

Question 99: Which ICD-10-CM code category is used to report type 2 diabetes mellitus without complications?

E08.9
E13.9
E11.9 (Correct answer)
E10.9

Correct answer: E11.9

E11.9 is the ICD-10-CM code for type 2 diabetes mellitus without complications.

Question 100: Bases for facility payments include:

RVUs and conversion factors
Fee schedules
IPPS using DRGs (Correct answer)
ICD-10 PCS codes

Correct answer: IPPS using DRGs

The Inpatient Prospective Payment System (IPPS) using Diagnosis-Related Groups (DRGs) is the primary method for reimbursing hospitals for inpatient services provided to Medicare beneficiaries. Under this system, hospitals receive a fixed payment amount for each patient discharge, based on the patient's DRG, regardless of the actual costs incurred. This incentivizes hospitals to manage costs efficiently and promotes standardized care.

Question 101: Why is documentation important in Certified Medical Coding Specialist risk management?

It is optional paperwork
It only benefits legal teams
It slows down operations
It creates an audit trail, supports decision-making, and demonstrates due diligence (Correct answer)

Correct answer: It creates an audit trail, supports decision-making, and demonstrates due diligence

This is fundamental to Certified Medical Coding Specialist practice. It creates an audit trail, supports decision-making, and demonstrates due diligence represents the professional standard for risk management in the Certified Medical Coding Specialist certification framework.

Question 102: In risk adjustment, what is the significance of 'condition hierarchy' in HCC models?

It prioritizes inpatient codes over outpatient codes
It ensures the most severe manifestation of a condition group is counted, preventing duplicate payment (Correct answer)
It ranks physician specialties by coding authority
It determines which payer is primary

Correct answer: It ensures the most severe manifestation of a condition group is counted, preventing duplicate payment

Condition hierarchy in HCC models prevents duplicate risk score credit by selecting only the highest-severity HCC within a disease category.

Question 103: Which section of ICD-10-CM contains codes for factors influencing health status, such as vaccination status?

Z codes (Correct answer)
Y codes
V codes
E codes

Correct answer: Z codes

Z codes (Z00–Z99) in ICD-10-CM classify factors influencing health status and contact with health services, including vaccination status.

Question 104: How should Certified Medical Coding Specialist professionals stay current with regulatory changes?

Rely on colleagues for updates
Wait until audited
Regulations rarely change
Monitor regulatory updates, participate in professional associations, and attend continuing education (Correct answer)

Correct answer: Monitor regulatory updates, participate in professional associations, and attend continuing education

This is fundamental to Certified Medical Coding Specialist practice. Monitor regulatory updates, participate in professional associations, and attend continuing education represents the professional standard for regulatory in the Certified Medical Coding Specialist certification framework.

Question 105: A practice receives an electronic remittance advice (ERA) via the X12 835 transaction. What information does this document contain?

Provider credentialing and enrollment information
Payment details, adjustments, and denial reasons for submitted claims (Correct answer)
Prior authorization approvals and reference numbers
Patient demographic and insurance eligibility data

Correct answer: Payment details, adjustments, and denial reasons for submitted claims

The X12 835 ERA contains payment amounts, contractual adjustments, patient responsibility amounts, and claim adjustment reason codes explaining any denials or reductions.

Question 106: A coder notices that a physician's documentation includes a diagnosis not supported by any clinical indicators in the record. The CORRECT action is to:

Omit the diagnosis and code only documented signs and symptoms
Query the physician to clarify the clinical basis for the diagnosis before coding it (Correct answer)
Report the physician to the compliance officer immediately
Code the diagnosis as documented since physician attestation is sufficient

Correct answer: Query the physician to clarify the clinical basis for the diagnosis before coding it

When documentation appears inconsistent with clinical indicators, the coder should query the physician for clarification rather than coding an unsupported diagnosis or omitting it without verification.

Question 107: Which CPT code range covers Evaluation and Management (E/M) services for hospital inpatient care?

99201-99215
99221-99223 (Correct answer)
99241-99245
99281-99285

Correct answer: 99221-99223

CPT codes 99221-99223 are used for initial hospital inpatient care services.

Question 108: How do Certified Medical Coding Specialist professionals evaluate research quality?

Research quality cannot be evaluated
By publication date only
By assessing methodology, sample size, peer review status, and relevance to practice (Correct answer)
By the reputation of the author only

Correct answer: By assessing methodology, sample size, peer review status, and relevance to practice

This is fundamental to Certified Medical Coding Specialist practice. By assessing methodology, sample size, peer review status, and relevance to practice represents the professional standard for research in the Certified Medical Coding Specialist certification framework.

Question 109: The prefix 'hemi-' in medical terminology means:

Half (Correct answer)
Both
Three
One

Correct answer: Half

Hemi- means half, as in hemiplegia (paralysis of one side/half of the body).

Question 110: Which of the following is an example of a leading physician query that would be considered non-compliant?

'Can you clarify whether the patient's anemia is related to the chronic kidney disease documented?'
'Please clarify the type and cause of the anemia documented in this record.'
'Based on the labs, does the patient have iron deficiency anemia?' (Correct answer)
'Is there a clinical relationship between the two conditions noted in the record?'

Correct answer: 'Based on the labs, does the patient have iron deficiency anemia?'

Suggesting a specific diagnosis based on test results is a leading query and is non-compliant under AHIMA/ACDIS guidelines.

Question 111: The ICD-10-CM Alphabetic Index is used to:

Assign the final code without further verification
Locate the preliminary code before verifying in the Tabular List (Correct answer)
Replace the Tabular List entirely
Code only inpatient diagnoses

Correct answer: Locate the preliminary code before verifying in the Tabular List

The Alphabetic Index provides the initial code reference, but coders must always verify the final code in the Tabular List.

Question 112: Which ICD-10-CM chapter covers mental, behavioral, and neurodevelopmental disorders?

Chapter 4 (E00–E89)
Chapter 6 (G00–G99)
Chapter 5 (F01–F99) (Correct answer)
Chapter 18 (R00–R99)

Correct answer: Chapter 5 (F01–F99)

Chapter 5 of ICD-10-CM (F01–F99) covers mental, behavioral, and neurodevelopmental disorders.

Question 113: Which ICD-10-CM guideline applies when two or more interrelated conditions can be classified to the same code?

Multiple coding guideline
Combination code guideline (Correct answer)
Code first guideline
Laterality guideline

Correct answer: Combination code guideline

Combination codes in ICD-10-CM allow a single code to classify two diagnoses, a diagnosis with an associated sign/symptom, or a diagnosis with an associated complication.

Question 114: A coder is asked to critically appraise a study's methodology. Finding that the study used a convenience sample of only 30 records from one facility limits which quality dimension?

External validity (generalizability) (Correct answer)
Statistical power
Internal validity
Measurement reliability

Correct answer: External validity (generalizability)

A small convenience sample from a single facility limits how well the results can be generalized to other facilities or populations (external validity).

Question 115: An Excludes1 note in ICD-10-CM means:

The excluded condition may be coded together if both conditions are present
Additional digits are required
The excluded condition cannot be coded together with the code above it (Correct answer)
The code is not billable

Correct answer: The excluded condition cannot be coded together with the code above it

Excludes1 indicates a pure exclusion — the two conditions cannot occur together, so both codes should never be assigned simultaneously.

Question 116: When a physician documents 'acute on chronic' heart failure, how should this be coded in ICD-10-CM?

Code the combined 'acute on chronic' combination code (Correct answer)
Code only the acute type
Code with two separate codes for acute and chronic
Code only the chronic type

Correct answer: Code the combined 'acute on chronic' combination code

ICD-10-CM provides specific combination codes for acute on chronic conditions such as heart failure (e.g., I50.23 for acute-on-chronic systolic heart failure).

Question 117: HCPCS modifier KX is used to indicate what?

The claim is being resubmitted after a denial
A waiver of liability has been issued to the patient
The item is not covered by Medicare
The requirements specified in the applicable medical policy have been met (Correct answer)

Correct answer: The requirements specified in the applicable medical policy have been met

Modifier KX indicates that the requirements specified in the applicable Medicare coverage policy have been met and documentation is on file.

Question 118: Which federal agency is primarily responsible for investigating healthcare fraud and abuse under the False Claims Act?

Department of Justice (DOJ) (Correct answer)
Health Resources and Services Administration (HRSA)
Centers for Medicare & Medicaid Services (CMS)
Office of Inspector General (OIG)

Correct answer: Department of Justice (DOJ)

The Department of Justice (DOJ) has primary authority to litigate civil False Claims Act cases, often working in partnership with the OIG and FBI.

Question 119: A patient is seen for a sprain of the right ankle, initial encounter. Which ICD-10-CM code applies?

S93.409A
S93.402A
S93.401D
S93.401A (Correct answer)

Correct answer: S93.401A

S93.401A represents sprain of the right ankle, initial encounter, with the 7th character A indicating the initial encounter.

Question 120: How do Certified Medical Coding Specialist professionals build trust with clients or stakeholders?

Through consistent competence, transparency, reliability, and ethical behavior (Correct answer)
Through marketing only
Through competitive pricing only
By always agreeing with clients

Correct answer: Through consistent competence, transparency, reliability, and ethical behavior

This is fundamental to Certified Medical Coding Specialist practice. Through consistent competence, transparency, reliability, and ethical behavior represents the professional standard for communication in the Certified Medical Coding Specialist certification framework.

Question 121: Which stakeholder is primarily responsible for ensuring clinical documentation supports the codes assigned?

The hospital administrator
The insurance payer
The medical coder
The treating physician or provider (Correct answer)

Correct answer: The treating physician or provider

The treating physician or provider bears primary responsibility for creating clinical documentation that accurately reflects the patient encounter.

Question 122: Which coding guideline requires that all confirmed conditions present at discharge be coded for inpatient records?

UHDDS principal diagnosis definition (Correct answer)
HIPAA minimum necessary standard
OIG Work Plan instruction
UACDS outpatient guideline

Correct answer: UHDDS principal diagnosis definition

The Uniform Hospital Discharge Data Set (UHDDS) guidelines direct that all conditions present at discharge be coded on inpatient records.

Question 123: What is the role of professional journals in Certified Medical Coding Specialist practice?

They are optional reading
They only benefit academics
They disseminate current research, best practices, and professional developments (Correct answer)
They are outdated by publication time

Correct answer: They disseminate current research, best practices, and professional developments

This is fundamental to Certified Medical Coding Specialist practice. They disseminate current research, best practices, and professional developments represents the professional standard for research in the Certified Medical Coding Specialist certification framework.

Question 124: A medical coder's primary obligation when documentation is ambiguous is to:

Query the provider for clarification (Correct answer)
Select the code that maximizes reimbursement
Assume the most severe diagnosis to be safe
Leave the field blank on the claim form

Correct answer: Query the provider for clarification

When documentation is ambiguous, the coder must query the provider rather than assume or select based on reimbursement.

Question 125: A facility wants to benchmark its CC/MCC capture rate against national averages. Which publicly available database would be MOST appropriate for this comparison?

AAFP coding guidelines
OIG Work Plan summaries
CMS MedPAR data (Correct answer)
UHDDS facility-specific reports

Correct answer: CMS MedPAR data

CMS MedPAR (Medicare Provider Analysis and Review) data contains national inpatient statistics including DRG distributions used for benchmarking.

Question 126: What is reflective practice in Certified Medical Coding Specialist professional development?

Avoiding past mistakes
Only reflecting on successes
Systematically examining experiences to gain insight and improve future practice (Correct answer)
Writing personal diaries

Correct answer: Systematically examining experiences to gain insight and improve future practice

This is fundamental to Certified Medical Coding Specialist practice. Systematically examining experiences to gain insight and improve future practice represents the professional standard for practical in the Certified Medical Coding Specialist certification framework.

Question 127: Which action would BEST demonstrate that a coding department's quality improvement plan is working?

Increasing the number of codes assigned per chart
A statistically significant reduction in error rate from one audit cycle to the next (Correct answer)
Expanding the number of coders employed
Decreasing the average time to code a record

Correct answer: A statistically significant reduction in error rate from one audit cycle to the next

A measurable, statistically significant reduction in error rate between audit cycles is the strongest evidence of effective quality improvement.

Question 128: A patient is seen for low back pain and the physician orders an MRI. The MRI reveals a herniated disc at L4-L5. What diagnosis is coded for the encounter?

The MRI finding coded as an incidental finding
The herniated disc at L4-L5 since it is the confirmed etiology of the low back pain (Correct answer)
Low back pain only, since the MRI result was not yet reviewed at the encounter
Both the low back pain and the herniated disc

Correct answer: The herniated disc at L4-L5 since it is the confirmed etiology of the low back pain

Once a definitive diagnosis is established and documented, the confirmed diagnosis (herniated disc M51.16) replaces the symptom code (low back pain) per outpatient coding guidelines.

Question 129: A coder notices the EHR auto-populated a diagnosis code from a prior visit. What is the BEST action?

Accept the code since it was previously validated
Report the system error to IT immediately
Verify the code reflects the current encounter's documented diagnosis (Correct answer)
Delete all auto-populated data and start fresh

Correct answer: Verify the code reflects the current encounter's documented diagnosis

Auto-populated data must always be verified against current documentation because coding each encounter based on its own clinical findings is a fundamental coding principle.

Question 130: Continuing education units (CEUs) are required for CMCS credential maintenance primarily to ensure:

Coders meet state licensing requirements
Knowledge stays current with evolving coding systems and regulations (Correct answer)
Billing software remains up to date
Coders earn higher salaries over time

Correct answer: Knowledge stays current with evolving coding systems and regulations

CEUs keep credentialed professionals current with changing codes, guidelines, and regulations that affect coding accuracy.

Question 131: Under the Stark Law, which of the following financial relationships between a physician and an entity is PROHIBITED (unless an exception applies)?

A physician referring Medicare patients to a hospital where they have an ownership interest (Correct answer)
A physician accepting speaking honoraria below the nominal value threshold
A physician purchasing medical supplies at fair market value
A physician receiving a productivity bonus based on personally performed services

Correct answer: A physician referring Medicare patients to a hospital where they have an ownership interest

Stark Law prohibits physician self-referrals to entities where the physician has a financial relationship for designated health services billed to Medicare, unless a specific exception applies.

Question 132: Under HIPAA, which of the following is NOT considered a covered entity?

Health insurance plans
Healthcare clearinghouses
Healthcare providers who transmit health information electronically
Employers who self-administer wellness programs with no PHI transmission (Correct answer)

Correct answer: Employers who self-administer wellness programs with no PHI transmission

Employers who do not transmit PHI electronically in the course of healthcare transactions are not HIPAA covered entities.

Question 133: Which document outlines the specific diagnoses and procedures that are covered by Medicare for a given service, serving as a reference for medical necessity?

National Coverage Determination (NCD)
Local Coverage Determination (LCD) (Correct answer)
Advance Beneficiary Notice (ABN)
Medicare Benefit Policy Manual

Correct answer: Local Coverage Determination (LCD)

LCDs are developed by Medicare Administrative Contractors (MACs) and specify diagnoses/conditions under which a service is considered medically necessary in their jurisdiction.

Question 134: Which HCPCS Level II section covers behavioral health and substance abuse services?

G codes
T codes
H codes (Correct answer)
M codes

Correct answer: H codes

H codes cover mental health, substance abuse, and behavioral health services in HCPCS Level II.

Question 135: Which CPT modifier indicates that a service was performed by a resident under the direction of a teaching physician?

-AT
-AI
-GE
-GC (Correct answer)

Correct answer: -GC

HCPCS/CPT modifier -GC indicates that a service was performed in part by a resident under the direction of a teaching physician.

Question 136: How should a coder handle a diagnosis documented as 'probable' or 'suspected' in an outpatient setting?

Code the sign or symptom, not the suspected condition (Correct answer)
Leave the diagnosis field blank
Code the suspected condition
Use an unspecified code

Correct answer: Code the sign or symptom, not the suspected condition

For outpatient encounters, uncertain diagnoses ('probable,' 'suspected') should NOT be coded; instead, code the presenting sign or symptom.

Question 137: The National Correct Coding Initiative (NCCI) edits are designed to:

Prevent improper payment of services that should not be reported together (Correct answer)
Assign ASA units for anesthesia
Require prior authorization for procedures
Determine medical necessity

Correct answer: Prevent improper payment of services that should not be reported together

NCCI edits consist of procedure-to-procedure code pairs that Medicare and other payers use to prevent unbundling and improper code combinations.

Question 138: Which of the following best describes the role of a 'suspect condition' in Medicare Advantage risk adjustment?

Suspect conditions can be coded and submitted for risk adjustment based on clinical indicators
Suspect conditions cannot be submitted for risk adjustment; only confirmed diagnoses are valid (Correct answer)
Suspect conditions are automatically approved if flagged by a health plan algorithm
Suspect conditions require only a nurse practitioner sign-off to be coded

Correct answer: Suspect conditions cannot be submitted for risk adjustment; only confirmed diagnoses are valid

CMS requires confirmed diagnoses documented by a qualified provider; suspect or probable conditions cannot be submitted for Medicare Advantage risk adjustment.

Question 139: How should Certified Medical Coding Specialist professionals handle conflicts with stakeholders?

Address issues professionally through active listening, finding common ground, and seeking resolution (Correct answer)
Avoid all conflict
Ignore stakeholder concerns
Escalate immediately to management

Correct answer: Address issues professionally through active listening, finding common ground, and seeking resolution

This is fundamental to Certified Medical Coding Specialist practice. Address issues professionally through active listening, finding common ground, and seeking resolution represents the professional standard for communication in the Certified Medical Coding Specialist certification framework.

Question 140: A coder notices a physician consistently upcodes E/M services. Under the False Claims Act, who can file a qui tam lawsuit on behalf of the government?

Only licensed attorneys
Only the Office of Inspector General
Any private individual with knowledge of the fraud (Correct answer)
Only CMS auditors

Correct answer: Any private individual with knowledge of the fraud

The False Claims Act's qui tam provision allows any private individual (a 'whistleblower' or relator) who has knowledge of fraud against the government to file a lawsuit.

Question 141: Which HCPCS Level II section contains temporary codes used by Durable Medical Equipment Medicare Administrative Contractors (DME MACs)?

G codes
K codes (Correct answer)
Q codes
S codes

Correct answer: K codes

K codes are temporary codes established by DME MACs for items that do not yet have a permanent national HCPCS code.

Question 142: Which ICD-10-CM code category is used to report body mass index (BMI) as an additional code in risk-relevant obesity documentation?

Z87 (Personal history of diseases)
E11 (Type 2 diabetes mellitus)
Z68 (Body mass index) (Correct answer)
M79 (Other and unspecified soft tissue disorders)

Correct answer: Z68 (Body mass index)

Category Z68 contains BMI codes that are reported as additional codes to support obesity diagnoses documented by the provider.

Question 143: Which approach best demonstrates professional competency in Certified Medical Coding Specialist practice?

Integrating continuing education, practical experience, and evidence-based decision making (Correct answer)
Following only personal preferences
Relying solely on initial training
Avoiding challenging situations

Correct answer: Integrating continuing education, practical experience, and evidence-based decision making

This is fundamental to Certified Medical Coding Specialist practice. Integrating continuing education, practical experience, and evidence-based decision making represents the professional standard for professional standards in the Certified Medical Coding Specialist certification framework.

Question 144: The term 'dyspnea' means:

Absence of breathing
Rapid breathing
Painful swallowing
Difficulty breathing (Correct answer)

Correct answer: Difficulty breathing

Dyspnea is the medical term for difficulty or labored breathing, from dys- (difficult) + -pnea (breathing).

Question 145: HCPCS modifier GY is used to indicate which situation?

The service is provided in a rural health area
The item is statutorily excluded or does not meet the Medicare benefit definition (Correct answer)
The service meets Medicare coverage criteria
An advance beneficiary notice is on file

Correct answer: The item is statutorily excluded or does not meet the Medicare benefit definition

Modifier GY indicates that an item or service is statutorily excluded or does not meet the Medicare definition of a covered benefit.

Question 146: A coder reads a study where the confidence interval for a coding accuracy improvement is 95% CI [−0.02, 0.18]. What does this interval crossing zero suggest?

The improvement is clinically significant
The result is not statistically significant at the 0.05 level (Correct answer)
The sample size was too large
The intervention worsened coding accuracy

Correct answer: The result is not statistically significant at the 0.05 level

When a 95% confidence interval for a difference includes zero, it indicates the result is not statistically significant at the 0.05 alpha level.

Question 147: Which term describes a fracture in which the bone fragments are driven into each other?

Greenstick fracture
Pathological fracture
Comminuted fracture
Impacted fracture (Correct answer)

Correct answer: Impacted fracture

An impacted fracture occurs when the bone fragments are compressed or driven into each other, commonly seen in hip fractures.

Question 148: A patient with stage III chronic kidney disease (CKD) is also hypertensive. Per ICD-10-CM, how is this coded?

With only I10 since hypertension causes CKD
With the combination code I12.9 and N18.3 (Correct answer)
Separately: I10 and N18.3
With only N18.3 since CKD is the more specific diagnosis

Correct answer: With the combination code I12.9 and N18.3

ICD-10-CM presumes a cause-and-effect relationship between hypertension and CKD; the combination code I12.9 (hypertensive CKD) plus N18.3 (stage III) are assigned.

Question 149: Which ICD-10-CM guideline requires coding the underlying condition first, followed by the manifestation?

Code first convention
Etiology/manifestation convention (Correct answer)
Use additional code note
Excludes1 note

Correct answer: Etiology/manifestation convention

The etiology/manifestation convention requires the underlying disease to be sequenced first, with the manifestation code listed secondarily.

Question 150: When neither the diagnostic statement nor the health records include the necessary information, "not otherwise stated" is used in Volume 1.

None
NOS (Correct answer)
Both
NEC

Correct answer: NOS

NOS stands for 'Not Otherwise Specified' in medical coding. This abbreviation is used when the diagnostic statement or health records lack sufficient detail to assign a more specific code. It indicates that the information provided is too general, and the coder cannot determine a more precise diagnosis from the available documentation.

Question 151: Which modifier is used in HCPCS to indicate a bilateral procedure performed in the same operative session?

BI
BL
BA
50 (Correct answer)

Correct answer: 50

Modifier 50 indicates a bilateral procedure performed during the same operative session and is shared between the CPT and HCPCS systems.

Certified Medical Coding Specialist (CMCS)

The CMCS certification, awarded by the American Medical Billing Association (AMBA), validates proficiency in medical coding across CPT procedures, ICD-10 diagnoses, HCPCS Level II supplies, medical terminology, and professional coding practices. It is an open-book exam requiring comprehensive knowledge of all major code sets.

Questions

40 min

Time Limit

80%

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