CCDS-O Certification Exam Guide + Practice Questions Updated 2026

Explanation:
The clinical indicators strongly support alcohol dependence, not merely alcohol “use” or “abuse.” The patient reports heavy, compulsive intake (early-morning drinking and at least a pint daily), and the provider explicitly documents that she “continues to be dependent on alcohol” and discusses treatment options―this aligns with a dependence-level disorder being addressed. Hypertension is also supported because the BP is elevated (165 /89) and the provider documents management activity (medications and diet counseling), meeting encounter relevance/reportability expectations. Diabetes is listed among chronic conditions, but the scenario provides no indicators of complications (no neuropathy, CKD, ulcers, retinopathy, etc.), so the supported choice is DM type 2without complications rather than “with complications.” Although COPD is listed in the “including” statement, no COPD-specific assessment/monitoring/treatment is described in the indicators provided, so the best-supported grouped option focuses on the conditions with clear supporting indicators and management in the note: DM2 without complications, HTN, and alcohol dependence.

Explanation:
For reporting Evaluation and Management (E/M) services, the longstanding “key components” framework recognizes history, examination, and medical decision making (MDM) as the core elements used to determine the appropriate E/M level when the service is not reported based on time. In outpatient CDI education aligned with ACDIS concepts, MDM is emphasized because it reflects the clinician’s cognitive work and risk-based thinking: the complexity of problems addressed, the amount/complexity of data reviewed and analyzed (labs, imaging, external notes, independent interpretation), and the risk of complications and/or morbidity from additional testing or treatment. “Review of systems” is a sub-element of the history component, not a separate key component. “Nature of presenting problem” and “coordination of care” can be clinically relevant and may support medical necessity or time-based billing (when documented appropriately), but they are not one of the three key components that define E/M reporting structure .
Therefore, the best answer is Medical decision making.

Explanation:
RADV (Risk Adjustment Data Validation) is a CMS audit program used in Medicare Advantage to confirm that diagnoses submitted for risk adjustment are supported by medical record documentation and meet reporting requirements. Its central aim is payment integrity―ensuring that risk-adjusted capitation payments to Medicare Advantage organizations are accurate based on valid, documented conditions. In outpatient CDI practice, RADV risk underscores why documentation must clearly support each reported diagnosis (e.g., condition evaluated/assessed/treated, clinically relevant, and properly documented by an eligible provider), because unsupported diagnoses can lead to payment recoupment and compliance exposure. RADV is not designed to assess medical necessity of the services provided (that is typically addressed through utilization review and other payer audits), nor is it focused on identifying overpayments to individual physicians (it targets plan-level risk adjustment payments). It also is separate from E/M leveling accuracy, which is governed by CPT/E/M guidelines and distinct audit processes .
Therefore, the best definition of RADV’s primary purpose is ensuring the integrity and accuracy of risk-adjusted payments.

Explanation:
In the CMS-HCC model, diabetes categories are hierarchical, meaning you capture the highest supported diabetes HCC for the year, not multiple diabetes HCCs simultaneously. Type 2 diabetes with peripheral neuropathy represents a chronic diabetic complication, so it maps to HCC 18 (Diabetes with Chronic Complications) rather than HCC 19 (without complications) or HCC 17 (acute complications). COPD is documented as present and clinically relevant (even without an exacerbation) and therefore maps to HCC 111 (Chronic Obstructive Pulmonary Disease) when it is assessed/managed as part of the visit. “History of depression, stable” does not necessarily meet the threshold for HCC 58, which is reserved for specific serious psychiatric diagnoses (e.g., major depressive disorder, bipolar disorder, paranoid disorders). A general “depression” history, especially if not specified as major depressive disorder and not actively addressed, often will not support HCC 58 capture .
Therefore, the visit captures HCC 18 and HCC 111 only.

Explanation:
In the CMS-HCC model, certain disease groupings are arranged in hierarchies so that when multiple related conditions are reported for the same patient, only the most severe (highest-ranked) HCC in that hierarchy is counted for risk adjustment. This prevents “double counting” of clinically related conditions that represent the same underlying burden of illness. The cancer-related HCCs in the 35C38 range are an example of this hierarchical design: if a patient has diagnoses that map to more than one of these HCCs, the model retains the highest-ranked category and suppresses the lower ones .
Therefore, the correct hierarchy order is from the most severe category (HCC 35) down sequentially through HCC 36, HCC 37, and HCC 38. From an outpatient CDI perspective, this reinforces why accuracy and specificity matter: documentation should clearly establish the most clinically severe, active, and treated condition so the correct (highest) HCC is captured, rather than relying on nonspecific or less severe descriptors that could under-represent patient complexity.