Certified Ambulance Coder (CAC) — Questions and Answers

Question 1: In the context of ambulance coder, which principle most directly governs legal and ethical considerations in ambulance billing practices?

Applying evidence-based methodologies with peer-reviewed support (Correct answer)
Following popular trends without evaluating their applicability
Relying exclusively on vendor-provided solutions
Using trial-and-error without systematic documentation

Correct answer: Applying evidence-based methodologies with peer-reviewed support

Applying evidence-based methodologies with peer-reviewed support is the correct approach because effective legal and ethical considerations in ambulance billing in the ambulance coder field requires adherence to professional standards, evidence-based practices, and systematic methodology. This approach ensures consistent, high-quality outcomes while maintaining professional accountability.

Question 2: Which HCPCS code is used to bill for Advanced Life Support Level 1 (ALS1) emergency transport?

A0426
A0428
A0433
A0427 (Correct answer)

Correct answer: A0427

A0427 is the HCPCS code for ALS1 emergency transport, representing the highest-level basic ALS service in a life-threatening situation.

Question 3: A patient's family member calls requesting information about the patient's transport and medical condition. The patient is an adult. What should the coder or billing staff do?

Provide summary information only since it is not the full medical record
Verify the patient has authorized disclosure before releasing any PHI (Correct answer)
Direct them to the treating physician without acknowledging the transport
Provide full details since family members always have the right to information

Correct answer: Verify the patient has authorized disclosure before releasing any PHI

HIPAA requires patient authorization before disclosing PHI to family members unless the patient is incapacitated or has granted prior permission.

Question 4: Under Medicare, what is a 'specialty care transport' (SCT) and which HCPCS code is used?

ALS transport with cardiac monitoring; A0427
Interfacility transport requiring a specialized nurse or paramedic with advanced skills; A0434 (Correct answer)
Air transport to a trauma center; A0431
BLS transport with oxygen; A0428

Correct answer: Interfacility transport requiring a specialized nurse or paramedic with advanced skills; A0434

SCT (A0434) covers interfacility transport requiring the skills of a registered nurse or other specialty provider beyond the scope of a standard paramedic.

Question 5: Why is prior authorization required for some non-emergency ambulance transports?

To record dispatch times
To confirm medical necessity before reimbursement (Correct answer)
To verify patient identity
To document mileage

Correct answer: To confirm medical necessity before reimbursement

Prior authorization ensures that the transport is medically necessary and meets coverage requirements before reimbursement is approved.

Question 6: What is the role of the Office of Inspector General (OIG) Work Plan in EMS billing compliance?

It sets the official Medicare fee schedule for ambulance services
It certifies EMS agencies as compliant with Medicare billing rules
It establishes HIPAA privacy standards for EMS providers
It identifies areas of focus for audits and investigations that EMS agencies should monitor (Correct answer)

Correct answer: It identifies areas of focus for audits and investigations that EMS agencies should monitor

The OIG Work Plan publishes annual audit and review targets, helping providers proactively assess and strengthen their compliance in those areas.

Question 7: A new regulation impacts ambulance coding and documentation compliance procedures. What should a CAC professional do first?

Complying only with regulations that have enforcement mechanisms
Ensuring compliance with current regulatory requirements and standards (Correct answer)
Delegating compliance oversight to administrative staff
Interpreting regulations loosely to allow maximum flexibility

Correct answer: Ensuring compliance with current regulatory requirements and standards

Ensuring compliance with current regulatory requirements and standards is the correct approach because effective ambulance coding and documentation compliance in the ambulance coder field requires adherence to professional standards, evidence-based practices, and systematic methodology. This approach ensures consistent, high-quality outcomes while maintaining professional accountability.

Question 8: What is the most common mistake professionals make when implementing ambulance coding and documentation compliance strategies?

Transferring all risk to external partners through contracts
Developing contingency plans for high-probability risk scenarios (Correct answer)
Responding to problems only after they occur
Creating contingency plans for every possible scenario regardless of probability

Correct answer: Developing contingency plans for high-probability risk scenarios

Developing contingency plans for high-probability risk scenarios is the correct approach because effective ambulance coding and documentation compliance in the ambulance coder field requires adherence to professional standards, evidence-based practices, and systematic methodology. This approach ensures consistent, high-quality outcomes while maintaining professional accountability.

Question 9: How does Medicare determine loaded mileage for ambulance reimbursement?

From the patient's home to the nearest hospital
From the point of patient pickup to the receiving facility (Correct answer)
From the ambulance base to the patient's location
From the dispatch location to the receiving facility

Correct answer: From the point of patient pickup to the receiving facility

Medicare reimburses loaded mileage only for the distance from where the patient is picked up to the receiving facility; mileage before patient contact is not reimbursed.

Question 10: A new regulation impacts legal and ethical considerations in ambulance billing procedures. What should a CAC professional do first?

Delegating compliance oversight to administrative staff
Ensuring compliance with current regulatory requirements and standards (Correct answer)
Complying only with regulations that have enforcement mechanisms
Interpreting regulations loosely to allow maximum flexibility

Correct answer: Ensuring compliance with current regulatory requirements and standards

Ensuring compliance with current regulatory requirements and standards is the correct approach because effective legal and ethical considerations in ambulance billing in the ambulance coder field requires adherence to professional standards, evidence-based practices, and systematic methodology. This approach ensures consistent, high-quality outcomes while maintaining professional accountability.

Question 11: Under the Medicare Ambulance Fee Schedule, what does the 'base rate' component of reimbursement cover?

Supplies and medications used during transport
The level of service provided (BLS/ALS) regardless of distance (Correct answer)
Only the first 10 miles of transport
Personnel costs only

Correct answer: The level of service provided (BLS/ALS) regardless of distance

The base rate covers the level of service (e.g., BLS, ALS1, ALS2) and is reimbursed regardless of transport distance; mileage is billed separately.

Question 12: What is the Medicare Advanced Beneficiary Notice (ABN) used for in ambulance billing?

To document the patient's medical condition
To authorize ALS-level care
To inform patients that Medicare may deny coverage and the patient may be liable (Correct answer)
To obtain physician certification for transport

Correct answer: To inform patients that Medicare may deny coverage and the patient may be liable

The ABN notifies Medicare beneficiaries before a service is rendered that Medicare may not cover it, giving patients the choice to receive or decline the service while understanding their financial liability.

Question 13: When a patient is transported after a syncopal episode with no identified cause, which ICD-10-CM code applies?

R55 (Correct answer)
R41.3
G90.3
I67.9

Correct answer: R55

R55 (Syncope and collapse) is the correct code when a patient faints and no underlying cause has been established at the time of transport.

Question 14: What documentation should accompany a non-emergency ambulance transport claim?

A letter from the ambulance company
A signed payment agreement from the insurer
A verbal approval from the patient
A Physician Certification Statement (PCS) (Correct answer)

Correct answer: A Physician Certification Statement (PCS)

Physician Certification Statements (PCS) verify medical necessity for non-emergency transports and are often required for reimbursement.

Question 15: Which scenario qualifies as an ALS assessment for ambulance billing purposes even when no ALS intervention is performed?

Automatic defibrillator application only
A paramedic performing a medical assessment that determines ALS care is not needed (Correct answer)
Vital signs documented by an EMT-Basic
Dispatcher documentation of symptom severity

Correct answer: A paramedic performing a medical assessment that determines ALS care is not needed

An ALS assessment by a paramedic qualifies as ALS1 even if no ALS intervention is ultimately performed, as long as the assessment itself required ALS-level training.

Question 16: Which ICD-10-CM code is used to document sepsis as the reason for emergency ambulance transport?

R65.20
A41.9 (Correct answer)
R65.21
B99.9

Correct answer: A41.9

A41.9 (Sepsis, unspecified organism) is the primary code for sepsis when no specific organism is identified in the documentation.

Question 17: What is the Medicare definition of 'medical necessity' for ambulance transport coverage?

Transport is requested by a physician
Transport occurs to a hospital
Transport is necessary because the patient's condition requires ambulance-level care and no other means is medically appropriate (Correct answer)
Transport is for an emergency condition only

Correct answer: Transport is necessary because the patient's condition requires ambulance-level care and no other means is medically appropriate

Medicare defines medically necessary ambulance transport as when the patient's condition requires ambulance-level services and the use of any other mode of transportation would endanger the patient's health.

Question 18: In the context of ambulance coder, which principle most directly governs modifiers and special coding considerations for ambulance claims practices?

Relying exclusively on vendor-provided solutions
Following popular trends without evaluating their applicability
Applying evidence-based methodologies with peer-reviewed support (Correct answer)
Using trial-and-error without systematic documentation

Correct answer: Applying evidence-based methodologies with peer-reviewed support

Applying evidence-based methodologies with peer-reviewed support is the correct approach because effective modifiers and special coding considerations for ambulance claims in the ambulance coder field requires adherence to professional standards, evidence-based practices, and systematic methodology. This approach ensures consistent, high-quality outcomes while maintaining professional accountability.

Question 19: What is the importance of using modifier 'GM' in ambulance billing?

It is used for air ambulance billing only
It indicates a non-emergency transport
It increases reimbursement for emergency transport
It designates multiple patients in one ambulance transport (Correct answer)

Correct answer: It designates multiple patients in one ambulance transport

Modifier 'GM' is used when multiple patients are transported in the same ambulance, ensuring proper billing for shared services.

Question 20: Under the Medicare Ambulance Fee Schedule, how many Geographic Service Areas (urban, rural, super-rural) affect the ambulance base rate?

Five
Three (Correct answer)
Two
Four

Correct answer: Three

Medicare's Ambulance Fee Schedule uses three geographic categories — urban, rural, and super-rural — each with different percentage adjustments to the national base rate.

Question 21: Which tool or methodology is most appropriate for analyzing ambulance coding and documentation compliance outcomes?

Maintaining strict formality that inhibits collaboration
Prioritizing relationships over professional standards
Adjusting boundaries based on individual situations without guidelines
Maintaining professional boundaries while building collaborative relationships (Correct answer)

Correct answer: Maintaining professional boundaries while building collaborative relationships

Maintaining professional boundaries while building collaborative relationships is the correct approach because effective ambulance coding and documentation compliance in the ambulance coder field requires adherence to professional standards, evidence-based practices, and systematic methodology. This approach ensures consistent, high-quality outcomes while maintaining professional accountability.

Question 22: A patient is transported from a physician's office to the hospital following an acute episode. Which origin/destination modifier pair is used?

RS
DP
HP
PH (Correct answer)

Correct answer: PH

The modifier combination 'PH' designates transport from a Physician's office (P) to a Hospital (H).

Question 23: What is considered fraudulent billing in ambulance services?

Billing for a higher level of service than provided (Correct answer)
Using the correct HCPCS code for transport
Submitting claims with proper documentation
Providing a breakdown of actual services rendered

Correct answer: Billing for a higher level of service than provided

Upcoding, or billing for a higher level of service than provided, is a fraudulent billing practice that can lead to legal penalties.

Question 24: Which Medicare condition of coverage requires that a Physician Certification Statement (PCS) be obtained for non-emergency ambulance transports?

All BLS transports
Inter-facility transports only
All ALS transports
Repetitive non-emergency transports (Correct answer)

Correct answer: Repetitive non-emergency transports

Medicare requires a Physician Certification Statement for repetitive non-emergency transports (3 or more within a 60-day period) to establish medical necessity.

Question 25: A patient is transported following a drug overdose. Which ICD-10-CM guideline applies to sequencing the poisoning code?

Use an external cause code only
Code the poisoning first, then the manifestation (Correct answer)
Use only the substance code
Code the manifestation first, then the poisoning

Correct answer: Code the poisoning first, then the manifestation

ICD-10-CM guidelines for poisoning require that the poisoning code (T36–T65) be sequenced first, followed by the manifestation codes.

Question 26: For ALS Level 2 (A0433) to be appropriately billed, which criteria must be met during transport?

Administration of three or more IV medications or at least one ALS2-level procedure (Correct answer)
Use of cardiac monitoring equipment only
Administration of a single medication IV push
Transport via air ambulance

Correct answer: Administration of three or more IV medications or at least one ALS2-level procedure

ALS Level 2 requires documentation of three or more administered medications or at least one ALS Level 2 procedure such as needle decompression or surgical airway.

Question 27: What is the purpose of a Compliance Plan in an EMS agency?

To eliminate the need for internal audits
To satisfy state licensing requirements only
To maximize revenue by identifying all billable services
To establish policies that prevent, detect, and correct fraud, waste, and abuse (Correct answer)

Correct answer: To establish policies that prevent, detect, and correct fraud, waste, and abuse

A compliance plan creates a framework for identifying and addressing billing and operational practices that could violate laws or regulations.

Question 28: What should be done if an ambulance transport claim is denied due to insufficient documentation?

Ignore the denial and bill the patient instead
File an appeal with additional documentation (Correct answer)
Resubmit the same claim without changes
Dispute the denial without providing further details

Correct answer: File an appeal with additional documentation

An appeal should be filed with additional documentation to support the medical necessity of the transport.

Question 29: Which scenario would require a ambulance coder professional to escalate a ambulance coding and documentation compliance concern?

Discouraging critical feedback to maintain team morale
Creating feedback mechanisms that encourage continuous improvement (Correct answer)
Using feedback solely for personnel evaluations
Collecting feedback only during formal review periods

Correct answer: Creating feedback mechanisms that encourage continuous improvement

Creating feedback mechanisms that encourage continuous improvement is the correct approach because effective ambulance coding and documentation compliance in the ambulance coder field requires adherence to professional standards, evidence-based practices, and systematic methodology. This approach ensures consistent, high-quality outcomes while maintaining professional accountability.

Question 30: Which billing code set is primarily used for ambulance services?

ICD-10-CM
HCPCS Level II (Correct answer)
CPT
SNOMED CT

Correct answer: HCPCS Level II

HCPCS (Healthcare Common Procedure Coding System) Level II codes are used to bill ambulance services and medical supplies.

Certified Ambulance Coder (CAC)

The CAC certification, offered by the National Academy of Ambulance Compliance (NAAC), validates expertise in ambulance billing, ICD-10 and HCPCS coding, payer rules, revenue cycle management, and compliance requirements for EMS professionals.

Questions

35 min

Time Limit

70%

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