CDIP Practice Test PDF (Free Printable 2026)

CDIP Practice Test PDF – Study Offline for the AHIMA Exam

The Certified Documentation Improvement Practitioner (CDIP) credential is awarded by the American Health Information Management Association (AHIMA) and recognizes professionals who specialize in reviewing clinical documentation to ensure that diagnoses, procedures, and clinical conditions are recorded with the specificity required for accurate coding, appropriate reimbursement, and reliable data quality. CDI specialists work alongside physicians, coders, and case managers to close documentation gaps before a patient's record is finalized — a role that has grown in importance as hospitals increasingly depend on diagnosis-related group (DRG) assignment to drive revenue and quality benchmarking.

This page provides a free downloadable PDF with practice questions that reflect the content and style of the actual CDIP exam. Print the PDF for distraction-free offline study: work through the questions during a break, a commute, or any time you cannot be in front of a screen. Once you have identified the areas that need more work, use the full online CDIP practice tests on this site for timed, scored sessions with immediate answer explanations.

The CDIP exam contains 130 questions, of which 110 are scored. Candidates have three and a half hours to complete the test. The passing score is 300 on a scaled scoring system. Content spans five major domains: CDI Fundamentals, MS-DRG impact and reimbursement, high-impact diagnoses for CDI review, ICD-10-CM and ICD-10-PCS coding specificity, and data quality and reporting. Each domain requires both conceptual understanding and the ability to apply knowledge to complex clinical scenarios drawn from real inpatient records.

What the CDIP Exam Covers

Clinical Documentation Improvement Fundamentals

The primary goal of a CDI program is to ensure that the clinical record accurately and completely reflects the patient's severity of illness and the complexity of care provided. In a DRG-based payment system, the principal diagnosis and the presence or absence of complication and comorbidity codes directly determine which DRG is assigned — and therefore what the hospital is paid. CDI specialists focus especially on capturing comorbidities and complications (CCs) and major comorbidities and complications (MCCs) because these codes trigger upgrades to higher-severity DRGs and carry significantly higher reimbursement weight.

Clinical validation is one of the most important and nuanced skills tested on the CDIP. It requires the CDI specialist to evaluate whether a documented diagnosis is supported by the clinical indicators in the record — laboratory values, vital signs, imaging results, clinical findings, and physician treatment decisions. A diagnosis that appears in the record but lacks supporting clinical evidence should be queried, not coded. Coding a diagnosis that is not clinically supported exposes the organization to audit risk and compliance liability.

The physician query process is the primary mechanism CDI specialists use to clarify or add diagnoses. A compliant query must be concise and focused on the clinical issue at hand. It must be non-leading — it cannot suggest a particular diagnosis or steer the physician toward a response that increases reimbursement. It must be based on documented clinical indicators, not assumptions or patterns from similar cases. Most importantly, it must allow multiple response options, including the option for the physician to indicate that the condition is "clinically undetermined" or does not apply to this patient. Queries that fail these standards can be challenged by payers during audits and create compliance risk for the organization.

MS-DRG Impact and Reimbursement

Medicare Severity Diagnosis Related Groups (MS-DRGs) are the classification system used by CMS to determine inpatient reimbursement under the Inpatient Prospective Payment System (IPPS). Each MS-DRG carries a relative weight that reflects the average resource intensity of cases in that group; the higher the weight, the higher the payment. When a case is assigned to a base DRG, the presence of a CC upgrades the assignment to a higher-severity DRG, and the presence of an MCC upgrades it to the highest-severity tier. The financial difference between a base DRG and its MCC variant can be substantial — often several thousand dollars per case.

Understanding principal diagnosis selection is critical because the principal diagnosis drives initial DRG assignment before any CCs or MCCs are considered. The principal diagnosis is defined as the condition established after study to be chiefly responsible for causing the patient's admission to the hospital. When two or more conditions meet that definition equally, coding guidelines allow either to be sequenced first, but CDI specialists should understand the downstream DRG impact of each choice. Case mix index (CMI) is the average DRG relative weight across all Medicare discharges at a hospital; a higher CMI indicates a more complex patient population and yields higher overall reimbursement. CDI programs track CMI trends to assess program effectiveness and identify documentation improvement opportunities.

High-Impact Diagnoses for CDI Review

Certain diagnoses carry disproportionate DRG impact and appear frequently on CDI query lists because they are commonly underdocumented, incorrectly specified, or documented in a way that does not support the highest appropriate severity assignment.

Sepsis is one of the highest-priority diagnoses in any CDI program. The current clinical definition — Sepsis-3 — defines sepsis as life-threatening organ dysfunction caused by a dysregulated host response to infection. Coding sepsis requires documentation of both the underlying infection and evidence of organ dysfunction. Septic shock, a subset of sepsis with circulatory failure and cellular metabolic abnormalities, carries an MCC designation and significantly higher DRG weight than sepsis alone. The CDI specialist must verify that the physician has documented the infection source, confirmed organ dysfunction through clinical indicators, and explicitly stated the diagnosis of sepsis rather than using nonspecific terms like "infection" or "systemic inflammatory response."

Heart failure specificity is another high-yield area. ICD-10-CM requires documentation of whether heart failure is systolic or diastolic, whether it is acute, chronic, or acute-on-chronic, and whether it involves the left ventricle, right ventricle, or both. A record that documents only "congestive heart failure" without further specification codes to a non-specific code that may not carry CC or MCC status. A query that prompts the physician to specify systolic vs. diastolic and acuity can unlock a higher-severity code and DRG assignment.

Acute kidney injury (AKI) versus chronic kidney disease (CKD) is a distinction that matters both clinically and for coding. AKI is a sudden loss of kidney function and carries CC status in many contexts; CKD is a long-standing reduction in kidney function and codes separately from AKI. When both are present, both should be coded. Malnutrition is frequently underdocumented: ICD-10-CM provides codes for mild, moderate, and severe malnutrition, as well as protein-calorie malnutrition with specific severity levels. Severe protein-calorie malnutrition is an MCC. CDI specialists should look for clinical indicators — low albumin, low pre-albumin, significant unintentional weight loss, clinical findings consistent with muscle wasting — and query for the appropriate specificity when those indicators are present.

Respiratory failure requires documentation of acuity (acute, chronic, or acute-on-chronic) and type (Type I hypoxemic failure, characterized by low PaO2; Type II hypercapnic failure, characterized by elevated PaCO2). Acute respiratory failure is an MCC; chronic respiratory failure is a CC. When respiratory failure complicates another condition such as pneumonia or COPD exacerbation, CDI review can determine whether the respiratory failure is documented as a complication and coded separately, adding DRG weight to the encounter.

ICD-10-CM and ICD-10-PCS Coding Specificity for CDI

CDI specialists are not coders, but they must understand coding rules well enough to know what documentation is needed and what gaps exist. ICD-10-PCS, used for inpatient procedure coding, is built on seven-character codes where each character specifies a different attribute of the procedure: section, body system, root operation, body part, approach, device, and qualifier. The approach character — for example, distinguishing open surgery from laparoscopic (endoscopic) surgery from percutaneous procedures — affects code assignment and can influence DRG assignment as well. Documentation that does not specify the approach, device used, or relevant qualifier values may result in a less specific code or a query from the coding team.

Hospital-acquired conditions (HACs) are conditions that were not present on admission (POA) and that CMS has designated as reasonably preventable through evidence-based guidelines. CMS does not add the CC or MCC value of a HAC diagnosis to the DRG calculation, which means that documentation of these conditions reduces reimbursement relative to what would have been paid if the condition had not occurred. CDI specialists need to understand the HAC list because accurate POA documentation — distinguishing conditions that were present at admission from those that developed during the stay — protects the hospital from inappropriate payment reductions while ensuring accurate data reporting.

Data Quality and Reporting

CDI programs are measured by a set of operational metrics that reflect the volume and quality of their review activity. The query rate measures the proportion of charts reviewed that generate at least one physician query. The physician response rate tracks what percentage of queries receive a response; a low response rate suggests a need for physician education or process improvement. The query agreement rate measures the proportion of responses where the physician confirms the diagnosis or provides the requested specificity; a very high agreement rate may signal that queries are being written too narrowly and not offering genuine clinical options.

Clinical validation denials occur when a payer audits a claim and determines that a coded diagnosis is not supported by the clinical documentation. These denials are increasingly common as payers deploy clinical denial specialists to review high-cost records. When a clinical validation denial is received, the CDI team typically participates in the appeal process by compiling the clinical evidence that supports the coded diagnosis and drafting a clinical rebuttal letter. Understanding the elements of a strong appeal — specific clinical indicators, physician attestation, and references to accepted clinical definitions — is an area that the CDIP exam tests at a conceptual level.

How to Use This PDF in Your Study Plan

Start with a Diagnostic Pass

Complete the PDF questions without referring to any reference materials. This baseline run gives you an honest picture of where your knowledge is strong and where it breaks down. Score your answers and calculate accuracy by domain. Most CDI candidates find that query compliance rules, coding specificity for high-impact diagnoses, and DRG mechanics are the areas most likely to need focused review — but your baseline results may reveal a different pattern.

Focus on Clinical Application, Not Memorization

The CDIP is a scenario-based exam. Questions present a patient scenario — a physician progress note, a set of lab values, an operative report excerpt — and ask what the CDI specialist should do next, whether a query is warranted, or what documentation is needed to support a specific code. Preparing by memorizing lists is less effective than practicing with clinical scenarios. For each high-impact diagnosis category (sepsis, heart failure, AKI, malnutrition, respiratory failure), make sure you can identify the clinical indicators that support a diagnosis and articulate why a query would or would not be appropriate.

Pair the PDF with Online Timed Practice

The cdip certification practice tests on this site include timed online sessions with immediate answer feedback and domain-level performance tracking. Use the PDF for offline review and self-assessment, and the online tests for realistic exam simulation. Combining both formats over a multi-week preparation period produces better retention than relying on a single resource.

Review Query Compliance Rules Thoroughly

Query compliance is tested repeatedly on the CDIP because it is a high-stakes area in real CDI practice. Understand the difference between a leading query (non-compliant) and a multiple-choice query (compliant). Know that queries must be based on documented clinical indicators, not assumptions. Practice identifying scenarios where a query is appropriate versus scenarios where the documentation is already sufficient for coding.

Continue Your Preparation with Full Online Practice Tests

The PDF is the right place to start, but the most effective CDIP preparation combines offline review with repeated timed online practice. The online tests on this site cover all five content domains, draw from a large question bank, and provide immediate explanations for every answer — details that reinforce the reasoning behind correct choices rather than just the correct answers themselves. Use your PDF results to identify the domains that need the most attention, then let the online test performance data guide your final weeks of preparation. Candidates who practice actively across the full range of content domains, rather than cramming a narrow set of topics, arrive at the testing center with the broad, applied knowledge the CDIP rewards.