Newly Released ACDIS CCDS Exam PDF

The observed-to-expected mortality ratio is calculated as:

80 observed deaths ÷ 100 expected deaths = 0.80.

A ratio below 1.0 means observed mortality is lower than predicted. In this case, the number of observed deaths is 20% below the expected number.

Accurate interpretation of mortality data is important for CDI because documentation contributes to the clinical information used by many risk-adjustment methodologies. If significant comorbidities or acute conditions are inadequately documented, the coded record may not fully represent the patient's severity or mortality risk.

However, CDI professionals must avoid treating risk-adjustment improvement as justification for unsupported diagnoses. Documentation should accurately represent conditions that were clinically present, evaluated, treated, monitored, or otherwise reportable according to applicable rules.

The official CCDS content outline specifically includes severity of illness/risk of mortality, physician documentation effects on public reporting, and analysis of hospital performance among its expected competencies.

Mortality ratios should also be interpreted in context; they are influenced by patient population, model methodology, documentation, coding accuracy, and actual clinical outcomes.

CCDS Reference Topics: O/E mortality; ROM; risk adjustment; quality outcomes; CDI program analysis.

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The record contains uncertainty regarding whether the documented ileus represents expected postoperative physiology or a clinically significant complication, making provider clarification appropriate.

Temporary impairment of gastrointestinal motility is common following abdominal surgery. Therefore, the mere occurrence of an ileus after surgery does not automatically establish a complication of care. Conversely, prolonged or clinically significant postoperative ileus requiring substantial treatment, extended hospitalization, nasogastric decompression, or other interventions may warrant distinct documentation.

The CDI specialist must not infer the complication relationship solely from timing. The Official Guidelines emphasize that a condition occurring after medical or surgical care is not automatically classified as a complication; appropriate provider documentation of the relationship and clinical significance is required where applicable.

Option C is also incorrect because postoperative ileus can be a reportable condition when clinically significant and appropriately documented. Option D substitutes a separate diagnosis without provider support.

The query should provide relevant duration, symptoms, imaging, diet status, nasogastric tube use, treatment, and expected postoperative course while allowing the surgeon to characterize the condition.

CCDS Reference Topics: Postoperative ileus; complications of care; postoperative documentation; clinical clarification.

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Pressure-ulcer staging is one of the recognized circumstances in which ICD-10-CM permits the relevant clinical detail to be obtained from documentation by an appropriate non-provider clinician, such as a qualified wound-care nurse.

The provider establishes the medical diagnosis, while the wound-care clinician's specialized assessment may support the stage assignment. This distinction allows coding to reflect the expertise of clinicians who directly assess the wound without requiring physicians to duplicate every technical staging statement.

Option C is too broad. The exception permitting stage documentation from another clinician does not grant non-provider documentation unrestricted authority to establish all reportable medical diagnoses.

Pressure-ulcer stage is highly relevant because ICD-10-CM pressure-ulcer codes incorporate both anatomical site and stage. It can also have substantial implications for severity reporting, POA assessment, CMS HAC policy, nursing care, quality review, and risk adjustment.

When different clinicians document conflicting stages, clarification should be pursued rather than selecting the most severe value.

CCDS candidates should understand the distinction between provider-established diagnoses and specific coding elements that ICD-10-CM permits to originate from other qualified professionals.

CCDS Reference Topics: Pressure ulcers; wound staging; non-provider documentation; coding exceptions.

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Among the listed diagnoses, acute diastolic heart failure has the greatest potential MS-DRG impact because ICD-10-CM code I50.31 is classified as an MCC under the FY 2026 CMS MS-DRG system. CMS specifically identifies I50.31 as an MCC, whereas diagnoses classified only as a CC generally produce a lower severity level within DRG families that distinguish no CC/MCC, CC, and MCC cases.

Acute kidney injury, commonly represented by N17.9 when unspecified, is generally a CC rather than an MCC; CMS examples demonstrate N17.9 functioning as a CC in MS-DRG assignment. COPD with acute exacerbation and many delirium diagnoses may also affect severity assignment, but they do not exceed the MCC effect of qualifying acute heart failure in the standard hierarchy represented here.

The wording “monetary impact” must not be interpreted as permission to pursue diagnoses for financial gain. CDI professionals should query only when clinical indicators justify clarification. Reimbursement is a consequence of accurate documentation and coding, not the clinical justification for creating a diagnosis.

The actual payment impact also depends on the principal diagnosis, existing MCCs, procedures, payer methodology, and final MS-DRG.

CCDS Reference Topics: CC/MCC hierarchy; MS-DRG reimbursement; acute heart failure; compliant CDI practice.

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