---
title: "ICD-10-CM I50.9: Heart failure, unspecified | BillingBrief"
description: "ICD-10-CM code I50.9: Heart failure, unspecified. Category, related codes, and the official source, in plain English."
canonical: "https://billingbrief.com/icd10/i50.9/"
language: "en"
---

# I50.9 Heart failure, unspecified

ICD-10-CM · [CMS code reference](#source)

**Official ICD-10-CM description:** Heart failure, unspecified

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Also covers

-   Cardiac, heart or myocardial failure NOS
-   Congestive heart disease
-   Congestive heart failure NOS

### Excludes2

Not part of this code, but both can be coded when both are documented.

-   fluid overload unrelated to congestive heart failure ([E87.70](https://billingbrief.com/icd10/e87.70/))
-   cardiac arrest (I46.-)
-   neonatal cardiac failure (P29.0)

### Code first

Code the underlying condition first, then this code.

-   heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)
-   heart failure due to hypertension ([I11.0](https://billingbrief.com/icd10/i11.0/))
-   heart failure due to hypertension with chronic kidney disease (I13.-)
-   heart failure following surgery (I97.13-)
-   obstetric surgery and procedures (O75.4)
-   rheumatic heart failure (I09.81)

## Related codes

-   [`I50.811` Acute right heart failure ICD-10-CM](https://billingbrief.com/icd10/i50.811/)
-   [`I50.812` Chronic right heart failure ICD-10-CM](https://billingbrief.com/icd10/i50.812/)
-   [`I50.813` Acute on chronic right heart failure ICD-10-CM](https://billingbrief.com/icd10/i50.813/)
-   [`I50.814` Right heart failure due to left heart failure ICD-10-CM](https://billingbrief.com/icd10/i50.814/)
-   [`I50.82` Biventricular heart failure ICD-10-CM](https://billingbrief.com/icd10/i50.82/)
-   [`I50.83` High output heart failure ICD-10-CM](https://billingbrief.com/icd10/i50.83/)
-   [`I50.84` End stage heart failure ICD-10-CM](https://billingbrief.com/icd10/i50.84/)
-   [`I50.89` Other heart failure ICD-10-CM](https://billingbrief.com/icd10/i50.89/)

## Common questions

### Is I50.9 a billable code?

Yes. I50.9 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

I50 Heart failure

Chapter

Diseases of the circulatory system

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).