CCDS Cardiac Conditions and Documentation 1 — Questions and Answers
Question 1: What documentation is required to code heart failure as 'systolic' rather than unspecified in ICD-10-CM?
- Ejection fraction below 50% on echocardiogram
- Physician documentation of systolic heart failure (Correct answer)
- BNP level above 100 pg/mL
- Presence of pulmonary edema on chest X-ray
Correct answer: Physician documentation of systolic heart failure
ICD-10-CM requires physician documentation of systolic heart failure; clinical findings and test results alone are insufficient for code assignment by coders.
Question 2: Which CDI query approach is most appropriate when a patient presents with acute decompensated heart failure?
- Query for the underlying cause of decompensation (Correct answer)
- Query only for NYHA functional classification
- Query for fluid overload as an additional diagnosis
- No query is needed if heart failure is already documented
Correct answer: Query for the underlying cause of decompensation
Querying for the underlying cause of decompensation (e.g., medication noncompliance, new MI, dietary indiscretion) provides specificity that impacts DRG assignment and quality metrics.
Question 3: Which statement best describes the CDI significance of atrial fibrillation subtype documentation?
- Only paroxysmal AF requires subtype documentation
- All subtypes have equal coding significance and share one code
- ICD-10-CM has distinct codes for paroxysmal, persistent, long-standing persistent, and chronic AF (Correct answer)
- Subtype documentation only affects quality reporting, not reimbursement
Correct answer: ICD-10-CM has distinct codes for paroxysmal, persistent, long-standing persistent, and chronic AF
ICD-10-CM provides distinct codes for each atrial fibrillation subtype, making physician documentation of the specific type essential for accurate code assignment.
Question 4: When a STEMI is treated with percutaneous coronary intervention (PCI), what documentation must the CDI specialist verify for complete procedure coding?
- Documentation of the specific coronary artery only
- Documentation of the stent type only
- Both the specific coronary artery involved and the stent type used (Correct answer)
- Neither — the STEMI diagnosis code is sufficient
Correct answer: Both the specific coronary artery involved and the stent type used
Accurate STEMI procedure coding requires documentation of the specific coronary artery and the type of stent (drug-eluting vs. bare-metal) to assign the correct ICD-10-PCS procedure code.
Question 5: A patient is admitted for acute MI and subsequently develops heart failure during the stay. What is the correct principal diagnosis?
- Heart failure, because it was the more complex condition
- Acute MI, because it was the condition prompting admission (Correct answer)
- Either may be principal at the physician's discretion
- Both are listed but neither is designated as principal
Correct answer: Acute MI, because it was the condition prompting admission
When acute MI precipitates heart failure, the acute MI remains the principal diagnosis as the condition that established the need for admission.
Question 6: A patient has hypertension and heart failure documented separately without linkage. What is the CDI specialist's best action?
- Issue a compliant query to ask if the physician considers these conditions related (Correct answer)
- Code them separately since each is documented as an independent condition
- Code only heart failure as the more clinically significant condition
- Code only hypertension as the underlying etiology
Correct answer: Issue a compliant query to ask if the physician considers these conditions related
ICD-10-CM presumes a causal relationship between hypertension and heart failure (combination code I11.0), but physician confirmation via query is required before assigning the combination code.
