I51.5 Myocardial degeneration

Billable ICD-10-CM code, FY2026.

Applicable to

• Fatty degeneration of heart or myocardium
• Myocardial disease
• Senile degeneration of heart or myocardium

Excludes1 (never code together)

• myocardial degeneration due to hypertension (I11.-)
• myocardial degeneration due to hypertension and chronic kidney disease (I13.-)

Applies from I51 Complications and ill-defined descriptions of heart disease

Excludes2 (not included here)

• heart disease specified as rheumatic (I00-I09)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 227 — Cardiomyopathy/Myocarditis
• 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) 314-316 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 429.1 Myocardial degeneration

Diagnosis Index entries for I51.5

• Cardiomalacia
• Cardiomyoliposis
• Degeneration, degenerative › myocardial, myocardium (fatty) (hyaline) (senile)
• Disease, diseased › myocardium, myocardial
• Myocytolysis
• Stricture › myocardium, myocardial
• Syndrome › Beau's

Nearby codes

• I51.0 Cardiac septal defect, acquired
• I51.1 Rupture of chordae tendineae, not elsewhere classified
• I51.2 Rupture of papillary muscle, not elsewhere classified
• I51.3 Intracardiac thrombosis, not elsewhere classified
• I51.4 Myocarditis, unspecified
• I51.5 Myocardial degeneration (this code)
• I51.7 Cardiomegaly
• I51.8 Other ill-defined heart diseases
• I51.81 Takotsubo syndrome
• I51.89 Other ill-defined heart diseases
• I51.9 Heart disease, unspecified