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ICD-10-CM 2027

ICD-10 code for chronic diastolic heart failure

I50.32

Chronic diastolic (congestive) heart failure

✓ Billable / specificCC — complication/comorbidity

Confirmed by the official ICD-10-CM index entry “failure, failed › heart (acute) (senile) (sudden) › diastolic (congestive) (left ventricular) › chronic (congestive)”. Page updated September 29, 2026.

About coding chronic diastolic heart failure

The ICD-10-CM code for chronic diastolic heart failure is I50.32 (Chronic diastolic (congestive) heart failure). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I50.32.

It is also searched as chronic diastolic congestive heart failure.

Within I50.3 (diastolic (congestive) heart failure), I50.32 is specifically for chronic diastolic (congestive) heart failure. Related codes cover unspecified diastolic (congestive) heart failure (I50.30), acute diastolic (congestive) heart failure (I50.31) and acute on chronic diastolic (congestive) heart failure (I50.33).

Code first: heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8), heart failure due to hypertension (I11.0), heart failure due to hypertension with chronic kidney disease (I13.-), heart failure following surgery (I97.13-) and 2 more.

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

Related Chronic diastolic heart failure codes

  • I50.30 Unspecified diastolic (congestive) heart failure
  • I50.31 Acute diastolic (congestive) heart failure
  • I50.33 Acute on chronic diastolic (congestive) heart failure

Common questions about chronic diastolic heart failure ICD-10 codes

What is the ICD-10 code for chronic diastolic heart failure?

I50.32 — Chronic diastolic (congestive) heart failure. More specific codes apply when the documentation supports them: I50.30, I50.31, I50.33.

What is the ICD-10 code for unspecified diastolic (congestive) heart failure?

I50.30 — Unspecified diastolic (congestive) heart failure.

What is the ICD-10 code for acute diastolic (congestive) heart failure?

I50.31 — Acute diastolic (congestive) heart failure.

What is the ICD-10 code for acute on chronic diastolic (congestive) heart failure?

I50.33 — Acute on chronic diastolic (congestive) heart failure.

Is I50.32 billable?

Yes. I50.32 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can I50.32 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict I50.32 as a principal diagnosis.

Is I50.32 a CC or MCC?

I50.32 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.