I50.20
BillableUnspecified systolic (congestive) heart failure
HCC Category Mapping
V28HCC 226 — Heart Failure, Specified
0.000V24HCC 85 — Congestive Heart Failure
0.368ESRDHCC 85 — Congestive Heart Failure
0.000RxHCCHCC 186 — Heart Failure
0.000What This Code Means
The heart's lower left chamber cannot pump blood forward effectively, causing fluid to back up into the lungs and body, resulting in congestive heart failure symptoms.
Coding Tips
Clinical Significance
Unspecified systolic congestive heart failure (heart failure with reduced ejection fraction) indicates the left ventricle cannot contract effectively to pump blood forward. This diagnosis carries significant implications for treatment selection, monitoring intensity, and prognosis. Acuity specification (acute, chronic, or acute on chronic) should always be pursued.
Documentation Requirements
- ✓Provider documentation of systolic heart failure or heart failure with reduced ejection fraction
- ✓Ejection fraction value — typically less than 40% for systolic dysfunction
- ✓Acuity should be specified (acute, chronic, or acute on chronic) — this code is used only when unspecified
- ✓Current guideline-directed medical therapy medications
- ✓New York Heart Association functional class
- ✓Volume status assessment and symptoms
Commonly Confused Codes
I50.21 — Acute systolic heart failure: use when documented as acute or new onsetI50.22 — Chronic systolic heart failure: use when documented as chronic or long-standingI50.23 — Acute on chronic systolic heart failure: use when chronic disease has acute exacerbationI50.30 — Unspecified diastolic heart failure: diastolic dysfunction involves impaired relaxation, not impaired contractionI50.1 — Left ventricular failure, unspecified: does not specify systolic vs diastolic type
Code Hierarchy
└I50Heart failure└I50.2Systolic (congestive) heart failure└I50.20Unspecified systolic (congestive) heart failure
└I50.20Unspecified systolic (congestive) heart failure