ICD-10-CM category I50
Heart failure: every I50 code with its CMS-HCC V28 status
I50, Heart failure, holds 29 codes in the FY2026 ICD-10-CM set: 23 billable codes and 6 header codes that need a further character. Every one of them maps to a CMS-HCC V28 payment category (HCC 222, 224, 225, and 226) for payment year 2026.
CMS-HCC V28 categories in I50 (4)
Coefficients are the code-level reference values from the CMS V28 factor file (community, non-dual, aged), not a member's score. Hierarchy, interactions, and enrollment segment decide what a documented condition contributes.
All 29 I50 codes (FY2026)
Descriptors are the FY2026 order-file text. Header codes need a further character and cannot be reported; open any billable code for its tabular notes, MEAT guidance, and mapping detail.
| Code | Description | FY2026 | CMS-HCC V28 |
|---|---|---|---|
| I50 | Heart failure | Header | Header code, not reportable |
| I50.1 | Left ventricular failure, unspecified | Billable | HCC 226 |
| I50.2 | Systolic (congestive) heart failure | Header | Header code, not reportable |
| I50.20 | Unspecified systolic (congestive) heart failure | Billable | HCC 226 |
| I50.21 | Acute systolic (congestive) heart failure | Billable | HCC 225 |
| I50.22 | Chronic systolic (congestive) heart failure | Billable | HCC 226 |
| I50.23 | Acute on chronic systolic (congestive) heart failure | Billable | HCC 224 |
| I50.3 | Diastolic (congestive) heart failure | Header | Header code, not reportable |
| I50.30 | Unspecified diastolic (congestive) heart failure | Billable | HCC 226 |
| I50.31 | Acute diastolic (congestive) heart failure | Billable | HCC 225 |
| I50.32 | Chronic diastolic (congestive) heart failure | Billable | HCC 226 |
| I50.33 | Acute on chronic diastolic (congestive) heart failure | Billable | HCC 224 |
| I50.4 | Combined systolic (congestive) and diastolic (congestive) heart failure | Header | Header code, not reportable |
| I50.40 | Unspecified combined systolic (congestive) and diastolic (congestive) heart failure | Billable | HCC 226 |
| I50.41 | Acute combined systolic (congestive) and diastolic (congestive) heart failure | Billable | HCC 225 |
| I50.42 | Chronic combined systolic (congestive) and diastolic (congestive) heart failure | Billable | HCC 226 |
| I50.43 | Acute on chronic combined systolic (congestive) and diastolic (congestive) heart failure | Billable | HCC 224 |
| I50.8 | Other heart failure | Header | Header code, not reportable |
| I50.81 | Right heart failure | Header | Header code, not reportable |
| I50.810 | Right heart failure, unspecified | Billable | HCC 226 |
| I50.811 | Acute right heart failure | Billable | HCC 225 |
| I50.812 | Chronic right heart failure | Billable | HCC 226 |
| I50.813 | Acute on chronic right heart failure | Billable | HCC 225 |
| I50.814 | Right heart failure due to left heart failure | Billable | HCC 226 |
| I50.82 | Biventricular heart failure | Billable | HCC 226 |
| I50.83 | High output heart failure | Billable | HCC 226 |
| I50.84 | End stage heart failure | Billable | HCC 222 |
| I50.89 | Other heart failure | Billable | HCC 226 |
| I50.9 | Heart failure, unspecified | Billable | HCC 226 |
Documentation guides for I50
Frequently asked questions
How many I50 codes are there?
The I50 category (Heart failure) has 29 codes in the FY2026 ICD-10-CM order file: 23 billable and 6 header codes, counting the category itself. Only a billable code can be reported on a claim.
Which I50 codes map to an HCC under CMS-HCC V28?
23 billable codes in I50 map to HCC 222, 224, 225, and 226 in the CMS-HCC V28 model for payment year 2026. HCC 226 (Heart Failure, Except End Stage and Acute) carries the most, with 14 codes.
Which I50 codes are not billable?
I50 itself and 5 subcategory codes are header codes that need a further character before they can be reported: I50.2 (Systolic (congestive) heart failure), I50.3 (Diastolic (congestive) heart failure), I50.4 (Combined systolic (congestive) and diastolic (congestive) heart failure), I50.8 (Other heart failure), I50.81 (Right heart failure). Each one is listed in the table with the billable codes beneath it.
Source: FY2026 ICD-10-CM order file (FY 2026 Apr update) for codes, billability, and descriptors; CMS-HCC V28 PY2026 final ICD-10-CM mappings and relative factors for payment status. Table generated 2026-09-10.