Pass the ACDIS Clinical Documentation Specialist CCDS Questions and answers with ExamsMirror

The underlying systemic infection/sepsis code is sequenced as the principal diagnosis when sepsis or severe sepsis is present on admission and is the condition chiefly responsible for admission. Therefore, sepsis is the correct selection from the available choices.

The presence of organ failure means the patient may also meet the documentation requirements for severe sepsis when the acute organ dysfunction is explicitly associated with the sepsis. However, the severe-sepsis code from subcategory R65.2- cannot be assigned as the principal diagnosis. The FY 2026 ICD-10-CM Official Guidelines require the underlying systemic infection first, followed by R65.2- and codes for the associated acute organ dysfunction.

Osteomyelitis represents the localized infection source, but when the reason for admission is sepsis associated with that localized infection, the systemic infection is sequenced first under the sepsis guidelines. “Septicemia” should not be substituted for provider-documented sepsis.

The CDI specialist should also verify that the provider has clearly linked the organ failure to sepsis before severe-sepsis coding is applied.

CCDS Reference Topics: Sepsis sequencing; severe sepsis; principal diagnosis; localized infection.

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The record presents a legitimate opportunity to clarify the type or etiology of pneumonia, particularly whether aspiration contributed to the pulmonary infection. Dysphagia following stroke, documented aspiration during oral intake, fever, hypoxia, and a dependent-lobe infiltrate form a clinically relevant pattern.

However, the CDI specialist cannot independently convert unspecified pneumonia into aspiration pneumonia. Likewise, the speech-language pathologist can provide valuable clinical evidence regarding swallowing dysfunction and aspiration risk, but that documentation does not independently establish the medical diagnosis of aspiration pneumonia for coding purposes.

A compliant query should objectively present the pertinent indicators and allow the provider to identify aspiration pneumonia, another pneumonia type, pneumonitis, another condition, or inability to determine.

Automatically assigning both bacterial and aspiration pneumonia would also be inappropriate because neither bacterial etiology nor a separate second pneumonia diagnosis has been established.

The current ACDIS/AHIMA guidance emphasizes that queries should arise from the clinical record and preserve the provider's independent judgment rather than directing a preferred diagnosis.

CCDS Reference Topics: Pneumonia specificity; aspiration; dysphagia; interdisciplinary documentation; compliant query development.

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For excisional debridement, documentation of the deepest tissue level actually removed is essential for accurate ICD-10-PCS procedure assignment. Relevant levels may include skin, subcutaneous tissue, fascia, muscle, or bone.

The presence of a deep wound does not establish that debridement reached the deepest anatomical layer visible in the wound. For example, a wound may extend to muscle while the physician removes only necrotic subcutaneous tissue. Coding must reflect the body part and tissue actually debrided rather than the overall depth of the wound.

Therefore, the CDI specialist should clarify what tissue was excised. Other procedural elements may already be supported by the operative documentation, including the excisional nature of the procedure.

The number of instruments or duration of anesthesia does not determine the applicable body-part value. Similarly, administrative details have no bearing on procedural specificity.

CDI specialists working with surgical records must understand the distinction between wound description and procedure performance. Accurate procedural documentation can affect ICD-10-PCS coding and ultimately MS-DRG assignment, particularly when an operating-room procedure influences grouper logic.

The CCDS competency framework includes medical-record review and coding/payment implications of inpatient procedures.

CCDS Reference Topics: Excisional debridement; ICD-10-PCS; tissue depth; operative documentation.

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An unanswered clinically significant query should be managed through the organization's defined escalation process. The process may involve CDI leadership, coding leadership, a physician advisor, department leadership, or other designated personnel, depending on organizational policy.

Neither CDI nor coding may independently supply the missing diagnosis because diagnostic conclusions remain the provider's responsibility. Removing an unresolved query simply to accelerate billing can undermine documentation integrity and may create compliance problems.

Escalation policies should be standardized rather than applied only when a particular diagnosis affects reimbursement. Policies commonly address expected response time, reminder intervals, responsible escalation personnel, high-priority queries, retrospective queries, and final-bill procedures.

The 2026 ACDIS/AHIMA Guidelines for Achieving a Compliant Query Practice supersede prior versions and serve as the current foundational guidance for organizations establishing compliant query policies and procedures.

A mature escalation process balances timely claim completion with respect for provider workload and independent clinical judgment. Its purpose is obtaining complete and accurate documentation, not forcing agreement with a CDI-generated diagnosis.

CCDS Reference Topics: Query escalation; organizational policy; unanswered queries; compliance; provider responsibility.

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CMS publishes the complete MCC and CC lists as part of the FY 2026 IPPS Final Rule supporting tables. Specifically, the FY 2026 final-rule page identifies Table 6I as the Complete MCC List and Table 6J as the Complete CC List, along with additions, deletions, and the CC exclusion list.

These files are critical reference resources when assessing MS-DRG severity logic. Nevertheless, classification as an MCC or CC does not automatically mean that the diagnosis changes a particular case's MS-DRG. Principal-diagnosis exclusions, procedure logic, DRG structure, and the presence of another MCC can affect whether a diagnosis alters final assignment.

The Hospital Consumer Assessment survey relates to patient experience rather than diagnosis severity classification. The Physician Fee Schedule governs professional reimbursement and does not contain the inpatient MS-DRG MCC/CC classification system. National Coverage Determinations address Medicare coverage for particular services rather than MS-DRG severity categories.

CDI specialists should use the current CMS version applicable to the discharge date. CMS identifies MS-DRG Version 43.1 as effective April 1 through September 30, 2026.

CCDS Reference Topics: MCC; CC; CMS Definitions Manual; IPPS; MS-DRG severity.

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The mortality ratio is the option most directly associated with patient outcome measurement and risk-adjusted quality reporting. Although the question uses the phrase expected/observed mortality ratio, mortality analytics are frequently expressed operationally as an observed-to-expected (O/E) mortality ratio. Documentation affects the expected component because severity-of-illness and risk-of-mortality models depend substantially on accurately reported diagnoses and comorbid conditions.

If important acute or chronic conditions are not documented or are insufficiently specified, coded data may portray a patient as less severely ill than the clinical reality. The expected mortality calculated by a risk-adjustment model may therefore be lower, potentially making actual mortality performance appear less favorable. This makes mortality analysis particularly useful when teaching physicians why documentation affects quality measures independently of reimbursement.

CC/MCC capture is useful for examining documentation and reimbursement performance but is not itself an outcome measure. Monthly review volume is a productivity metric, while CDI/coder agreement evaluates internal process performance.

The CCDS examination content specifically includes mortality reviews, interpretation of observed/expected ratios, severity of illness, risk of mortality, and documentation effects on publicly reported quality data.

CCDS Reference Topics: Impact of reportable diagnoses on quality of care; SOI/ROM; mortality index; physician education.

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PACT stands for Post-Acute Care Transfer. The PACT policy is part of Medicare's IPPS transfer-payment framework and can modify the normal full MS-DRG payment when a qualifying inpatient stay ends with an early transfer or discharge to specified post-acute settings.

CMS applies transfer-payment methodology when applicable conditions are met, including circumstances involving selected discharges to skilled nursing facilities, inpatient rehabilitation facilities, long-term care hospitals, psychiatric facilities, and certain home-health arrangements. For home health, the timing and relationship of post-discharge care can be relevant.

The policy exists because a short acute-care hospitalization followed by transfer to another care setting may not involve the same hospital resource utilization as a conventional discharge completing the expected course of inpatient treatment. Accordingly, the transferring hospital may receive a calculated transfer payment rather than the unrestricted full MS-DRG amount.

For CDI professionals, PACT illustrates why accurate discharge disposition and documentation can affect reimbursement even when the principal diagnosis, procedures, CCs, and MCCs are correctly captured.

CCDS Reference Topics: IPPS; MS-DRG reimbursement; discharge disposition; transfer payment policy.

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The Hospital-Acquired Condition Reduction Program (HACRP) imposes a 1% reduction in applicable Medicare fee-for-service payments on subsection (d) hospitals ranking in the worst-performing quartile based on the Total HAC Score.

For the current program, CMS uses six measures: the CMS Patient Safety and Adverse Events Composite (PSI 90) and five healthcare-associated infection measures—CLABSI, CAUTI, specified surgical-site infection, MRSA bacteremia, and C. difficile infection.

HACRP must be distinguished from the separate DRA Hospital-Acquired Condition/Present-on-Admission payment provision. CMS explicitly states that these are different programs.

Hospital Value-Based Purchasing also links quality performance with hospital payment, but its structure is different: it is funded through a 2% reduction of participating hospitals' base operating DRG payments that is redistributed through value-based incentives.

For CDI professionals, accurate clinical documentation helps ensure that quality data appropriately represent the patient's condition and hospital course. CDI should not attempt to suppress valid complications or create unsupported comorbidities to change quality performance.

CCDS Reference Topics: HACRP; PSI 90; HAIs; quality reimbursement; CMS quality programs.

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The strongest educational approach is targeted specialty-specific education using the surgeons' own documentation trends and realistic clinical examples. This addresses the recurring documentation problem while remaining clinically relevant to the audience.

Orthopedic surgeons do not need to become coding specialists. Education should instead explain which clinical distinctions matter—for example, whether anemia represents expected postoperative change, acute blood loss anemia, chronic anemia, or another diagnosis—and why accurate terminology improves the medical record.

Providing a long code list is unlikely to improve physician documentation behavior. Instructing surgeons to document acute blood loss anemia whenever hemoglobin decreases would be clinically inappropriate and could produce unsupported diagnoses. A postoperative hemoglobin decline may reflect hemodilution, expected surgical blood loss, chronic anemia, or other factors.

Stopping queries would leave meaningful ambiguities unresolved.

ACDIS/AHIMA query guidance emphasizes documentation accuracy and provider independence rather than reimbursement-focused diagnosis selection.

Successful physician education should be concise, clinically oriented, supported by service-line data, and reinforced when subsequent query trends demonstrate persistent problems.

CCDS Reference Topics: Physician education; communication; postoperative anemia; query trends; provider engagement.

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ICD-10-CM provides category I22 for a subsequent acute myocardial infarction occurring within four weeks—28 days—of an initial acute MI, when the qualifying MI types and circumstances meet the classification requirements.

The FY 2026 Official Guidelines specify that when a patient with a type 1 or unspecified acute MI experiences a new type 1 or unspecified MI within four weeks of the initial MI, a code from category I22 is used together with the appropriate I21 code. Sequencing depends on the circumstances of the encounter.

This rule requires care because type 2 MI and certain other myocardial infarction classifications do not follow the same I22 subsequent-MI logic. CDI specialists therefore need accurate documentation of MI type, anatomic location when applicable, timing, and whether the current event represents a genuinely new infarction rather than ongoing care for the original MI.

The prior STEMI does not become an “old MI” merely because the patient left the hospital; the ICD-10-CM acute MI period extends for four weeks from onset.

CCDS Reference Topics: Acute MI; subsequent MI; I21/I22; four-week rule; cardiovascular coding.

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