I50.30 Unspecified diastolic (congestive) heart failure

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from I50 Heart failure

Excludes2 (not included here)

• cardiac arrest (I46.-)
• neonatal cardiac failure (P29.0)

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-)
• obstetric surgery and procedures (O75.4)
• rheumatic heart failure (I09.81)

Applies from I50.3 Diastolic (congestive) heart failure

Applicable to

• Diastolic left ventricular heart failure
• Heart failure with normal ejection fraction
• Heart failure with preserved ejection fraction [HFpEF]

Excludes1 (never code together)

• combined systolic (congestive) and diastolic (congestive) heart failure (I50.4-)

Code also

• end stage heart failure, if applicable (I50.84)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 226 — Heart Failure, Except End-Stage and Acute
• CMS-HCC V22: HCC 85 — Congestive Heart Failure
• RxHCC V08: HCC 186 — Heart Failure
• ESRD V24: HCC 85

MS-DRG index

Defines the logic of DRG(s) 291-293 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 428.0 Congestive heart failure, unspecified (approximate)
• 428.30 Diastolic heart failure, unspecified (approximate)
• 428.30 Diastolic heart failure, unspecified (approximate)

Code annotations containing back-references to I50.30

Back-references to I50

• Code Also: E83.820 Generalized arterial calcification of infancy with unspecified genetic causality ("heart failure (I50.-)")
• Code Also: E83.821 ENPP1 deficiency causing generalized arterial calcification of infancy ("heart failure (I50.-)")
• Code Also: E83.823 ABCC6 deficiency causing generalized arterial calcification of infancy ("heart failure (I50.-)")
• Use Additional: I09.81 Rheumatic heart failure ("code to identify type of heart failure (I50.-)")
• Use Additional: I11.0 Hypertensive heart disease with heart failure ("code to identify type of heart failure (I50.-)")
• Use Additional: I13.0 Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease ("code to identify type of heart failure (I50.-)")
• Use Additional: I13.2 Hypertensive heart and chronic kidney disease with heart failure and with stage 5 chronic kidney disease, or end stage renal disease ("code to identify type of heart failure (I50.-)")
• Use Additional: I16.1 Hypertensive emergency ("acute pulmonary edema (left and/or right ventricular failure) (J81.0, I50.-)")
• Code First: I5A Non-ischemic myocardial injury (non-traumatic) ("heart failure (I50.-)")
• Use Additional: I97.13 Postprocedural heart failure ("code to identify the heart failure (I50.-)")
• Type 2 Excludes: J91 Pleural effusion in conditions classified elsewhere ("pleural effusion in heart failure (I50.-)")

Diagnosis Index entries for I50.30

• Failure, failed › heart (acute) (senile) (sudden) › diastolic (congestive) (left ventricular)

Nearby codes

• I50.20 Unspecified systolic (congestive) heart failure
• I50.21 Acute systolic (congestive) heart failure
• I50.22 Chronic systolic (congestive) heart failure
• I50.23 Acute on chronic systolic (congestive) heart failure
• I50.3 Diastolic (congestive) heart failure
• I50.30 Unspecified diastolic (congestive) heart failure (this code)
• I50.31 Acute diastolic (congestive) heart failure
• I50.32 Chronic diastolic (congestive) heart failure
• I50.33 Acute on chronic diastolic (congestive) heart failure
• I50.4 Combined systolic (congestive) and diastolic (congestive) heart failure
• I50.40 Unspecified combined systolic (congestive) and diastolic (congestive) heart failure