I50.813 Acute on chronic right heart failure

Billable ICD-10-CM code, FY2026.

Applicable to

• Acute on chronic isolated right heart failure
• Acute on chronic (isolated) right ventricular failure
• Acute decompensation of chronic (isolated) right ventricular failure
• Acute exacerbation of chronic (isolated) right ventricular failure

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 I50.81 Right heart failure

Applicable to

• Right ventricular failure

Risk adjustment (HCC)

• CMS-HCC V28: HCC 225 — Acute Heart Failure (Excludes Acute on Chronic)
• 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)

• 428.9 Heart failure, unspecified (approximate)

Code annotations containing back-references to I50.813

Back-references to I50.81

• Code Also: I27.81 Cor pulmonale (chronic) (", if applicable, right heart failure (I50.81-)")

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 I50.813

• Failure, failed › heart (acute) (senile) (sudden) › with › decompensation › right
• Failure, failed › heart (acute) (senile) (sudden) › right (isolated) (ventricular) › acute › and (on) chronic
• Failure, failed › heart (acute) (senile) (sudden) › right (isolated) (ventricular) › chronic › and acute

Nearby codes

• I50.8 Other heart failure
• I50.81 Right heart failure
• I50.810 Right heart failure, unspecified
• I50.811 Acute right heart failure
• I50.812 Chronic right heart failure
• I50.813 Acute on chronic right heart failure (this code)
• I50.814 Right heart failure due to left heart failure
• I50.82 Biventricular heart failure
• I50.83 High output heart failure
• I50.84 End stage heart failure
• I50.89 Other heart failure