ICD-10-CM
ICD-10 code for Heart failure: I50.9
The CDC title for "Heart failure" is I50 (Heart failure), a header that is not billable. When nothing more specific is documented, the billable code is I50.9, Heart failure, unspecified.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under I50, then other CDC titles that name heart failure
A header groups codes and is not billed. A billable code is one you can report.
- I50Heart failureHeader
- I50.1Left ventricular failure, unspecifiedBillable
- I50.2Systolic (congestive) heart failureHeader
- I50.20Unspecified systolic (congestive) heart failureBillable
- I50.21Acute systolic (congestive) heart failureBillable
- I50.22Chronic systolic (congestive) heart failureBillable
- I50.23Acute on chronic systolic (congestive) heart failureBillable
- I50.3Diastolic (congestive) heart failureHeader
- I50.30Unspecified diastolic (congestive) heart failureBillable
- I50.31Acute diastolic (congestive) heart failureBillable
- I50.32Chronic diastolic (congestive) heart failureBillable
- I50.33Acute on chronic diastolic (congestive) heart failureBillable
- I50.4Combined systolic (congestive) and diastolic (congestive) heart failureHeader
- I50.40Unspecified combined systolic (congestive) and diastolic (congestive) heart failureBillable
- I50.41Acute combined systolic (congestive) and diastolic (congestive) heart failureBillable
- I50.42Chronic combined systolic (congestive) and diastolic (congestive) heart failureBillable
- I50.43Acute on chronic combined systolic (congestive) and diastolic (congestive) heart failureBillable
- I50.8Other heart failureHeader
- I50.81Right heart failureHeader
- I50.810Right heart failure, unspecifiedBillable
- I50.811Acute right heart failureBillable
- I50.812Chronic right heart failureBillable
- I50.813Acute on chronic right heart failureBillable
- I50.814Right heart failure due to left heart failureBillable
- I50.82Biventricular heart failureBillable
- I50.83High output heart failureBillable
- I50.84End stage heart failureBillable
- I50.89Other heart failureBillable
- I50.9Heart failure, unspecifiedBillable
- I09.81Rheumatic heart failureBillable
- I11.0Hypertensive heart disease with heart failureBillable
- I13.0Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney diseaseBillable
- I13.2Hypertensive heart and chronic kidney disease with heart failure and with stage 5 chronic kidney disease, or end stage renal diseaseBillable
- I97.13Postprocedural heart failureHeader
- I97.130Postprocedural heart failure following cardiac surgeryBillable
- I97.131Postprocedural heart failure following other surgeryBillable
Code first
The CDC tabular list says to report the code named here before this one.
From I50. A note on a category applies to every code under it.
Code first heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)
Code first heart failure due to hypertension (I11.0)
Code first heart failure due to hypertension with chronic kidney disease (I13.-)
Code first heart failure following surgery (I97.13-)
Code first obstetric surgery and procedures (O75.4)
Code first rheumatic heart failure (I09.81)
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From I50. A note on a category applies to every code under it.
Related conditions
Related pages
- I50.9 code detailsNotes, nearby codes, CMS-HCC group
- Category I50Every code under it
- Chapter 9Diseases of the circulatory system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Heart failure?
The CDC title for "Heart failure" is I50 (Heart failure), a header that is not billable. When nothing more specific is documented, the billable code is I50.9, Heart failure, unspecified.
Is I50.9 billable?
Yes. I50.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to I50.9?
The CDC tabular list gives 3 Excludes2 notes (may be coded together when both are documented) for I50.9 and the categories above it. They are listed on this page.
What chapter is I50.9 in?
Chapter 9. Diseases of the circulatory system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.