ICD-10-CM 2027
ICD-10 code for ventricular failure
From the official ICD-10-CM alphabetic index entry “Failure, failed › ventricular”. Page updated September 29, 2026.
About coding ventricular failure
The ICD-10-CM code for ventricular failure is I50.9 (Heart failure, unspecified). The official index lists 7 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I50.9.
Within I50, choose I50.9 (unspecified) only when documentation doesn't support a more specific option: left ventricular failure, unspecified (I50.1), systolic (congestive) heart failure (I50.2), diastolic (congestive) heart failure (I50.3), combined systolic (congestive) and diastolic (congestive) heart failure (I50.4) and other heart failure (I50.8).
The conditions in its Excludes2 note aren't part of I50.9, but may be coded alongside it if the patient has both: fluid overload unrelated to congestive heart failure (E87.70).
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.
More specific ventricular failure codes (official index)
- left I50.1 — Left ventricular failure, unspecified
- with rheumatic fever (conditions in I00)
- active I01.8 — Other acute rheumatic heart disease
- with chorea I02.0 — Rheumatic chorea with heart involvement
- inactive or quiescent (with chorea) I09.81 — Rheumatic heart failure
- rheumatic (chronic) (inactive) (with chorea) I09.81 — Rheumatic heart failure
- active or acute I01.8 — Other acute rheumatic heart disease
- with chorea I02.0 — Rheumatic chorea with heart involvement
- right
Common questions about ventricular failure ICD-10 codes
What is the ICD-10 code for ventricular failure?
- I50.9 — Heart failure, unspecified. More specific codes apply when the documentation supports them: I50.1, I01.8, I02.0, I09.81 and others below.
What is the ICD-10 code for left ventricular failure?
- I50.1 — Left ventricular failure, unspecified.
Is I50.9 billable?
- Yes. I50.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I50.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I50.9 as a principal diagnosis.
Is I50.9 a CC or MCC?
- No. I50.9 is neither a CC nor an MCC under MS-DRG v44.0.