Diseases of the Circulatory System
ICD-10 Code: I50.9
Heart Failure, Unspecified
Heart failure without specification of type (systolic vs. diastolic, acute vs. chronic).
Clinical Information
HF affects 6.2 million US adults. Inability of heart to pump adequate blood. I50.9 used when type not specified. Prefer specific codes when EF known (I50.2x systolic, I50.3x diastolic).
Coding Guidelines
- 1Use only when HF type unknown
- 2If EF known, use I50.2x (systolic) or I50.3x (diastolic)
- 3Specify acute (I50.x1) vs. chronic (I50.x2) when possible
Common Uses
- Heart failure documented without echo/type specified
Related ICD-10 Codes
I50.22Chronic systolic heart failure
I50.32Chronic diastolic heart failure
Documentation Requirements
- Document 'heart failure' or 'CHF'
- EF from echo when available
- Acute vs. chronic
Real-World Coding Examples
Patient with 'CHF' on diuretic, no recent echo. Diagnosis: Heart failure, unspecified (I50.9)
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