I50: Heart failure
Codes under I50 (Heart failure). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| I50.1 | Left ventricular failure, unspecified | ✓ |
| I50.1 | Left ventricular failure, unspecified | ✓ |
| I50.2 | Systolic (congestive) heart failure | — |
| I50.2 | Systolic (congestive) heart failure | — |
| I50.3 | Diastolic (congestive) heart failure | — |
| I50.3 | Diastolic (congestive) heart failure | — |
| I50.4 | Combined systolic (congestive) and diastolic (congestive) heart failure | — |
| I50.4 | Combined systolic (congestive) and diastolic (congestive) heart failure | — |
| I50.8 | Other heart failure | — |
| I50.8 | Other heart failure | — |
| I50.9 | Heart failure, unspecified | ✓ |
| I50.9 | Heart failure, unspecified | ✓ |
| I50.20 | Unspecified systolic (congestive) heart failure | ✓ |
| I50.20 | Unspecified systolic (congestive) heart failure | ✓ |
| I50.21 | Acute systolic (congestive) heart failure | ✓ |
| I50.21 | Acute systolic (congestive) heart failure | ✓ |
| I50.22 | Chronic systolic (congestive) heart failure | ✓ |
| I50.22 | Chronic systolic (congestive) heart failure | ✓ |
| I50.23 | Acute on chronic systolic (congestive) heart failure | ✓ |
| I50.23 | Acute on chronic systolic (congestive) heart failure | ✓ |
| I50.30 | Unspecified diastolic (congestive) heart failure | ✓ |
| I50.30 | Unspecified diastolic (congestive) heart failure | ✓ |
| I50.31 | Acute diastolic (congestive) heart failure | ✓ |
| I50.31 | Acute diastolic (congestive) heart failure | ✓ |
| I50.32 | Chronic diastolic (congestive) heart failure | ✓ |
| I50.32 | Chronic diastolic (congestive) heart failure | ✓ |
| I50.33 | Acute on chronic diastolic (congestive) heart failure | ✓ |
| I50.33 | Acute on chronic diastolic (congestive) heart failure | ✓ |
| I50.40 | Unspecified combined systolic (congestive) and diastolic (congestive) heart failure | ✓ |
| I50.40 | Unspecified combined systolic (congestive) and diastolic (congestive) heart failure | ✓ |
| I50.41 | Acute combined systolic (congestive) and diastolic (congestive) heart failure | ✓ |
| I50.41 | Acute combined systolic (congestive) and diastolic (congestive) heart failure | ✓ |
| I50.42 | Chronic combined systolic (congestive) and diastolic (congestive) heart failure | ✓ |
| I50.42 | Chronic combined systolic (congestive) and diastolic (congestive) heart failure | ✓ |
| I50.43 | Acute on chronic combined systolic (congestive) and diastolic (congestive) heart failure | ✓ |
| I50.43 | Acute on chronic combined systolic (congestive) and diastolic (congestive) heart failure | ✓ |
| I50.81 | Right heart failure | — |
| I50.81 | Right heart failure | — |
| I50.82 | Biventricular heart failure | ✓ |
| I50.82 | Biventricular heart failure | ✓ |
| I50.83 | High output heart failure | ✓ |
| I50.83 | High output heart failure | ✓ |
| I50.84 | End stage heart failure | ✓ |
| I50.84 | End stage heart failure | ✓ |
| I50.89 | Other heart failure | ✓ |
| I50.89 | Other heart failure | ✓ |
| I50.810 | Right heart failure, unspecified | ✓ |
| I50.810 | Right heart failure, unspecified | ✓ |
| I50.811 | Acute right heart failure | ✓ |
| I50.811 | Acute right heart failure | ✓ |
| I50.812 | Chronic right heart failure | ✓ |
| I50.812 | Chronic right heart failure | ✓ |
| I50.813 | Acute on chronic right heart failure | ✓ |
| I50.813 | Acute on chronic right heart failure | ✓ |
| I50.814 | Right heart failure due to left heart failure | ✓ |
| I50.814 | Right heart failure due to left heart failure | ✓ |
Frequently asked questions
What is ICD-10-CM code I50?
I50 is an ICD-10-CM category covering Heart failure. It contains 56 more specific diagnosis codes, 46 of which are billable.
Is I50 a billable code?
No — I50 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example I50.1 — Left ventricular failure, unspecified). 46 of the 56 codes under I50 are billable.
What codes fall under I50?
I50 includes I50.1, I50.1, I50.2, I50.2, I50.3, plus 51 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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