I51.5
Myocardial degeneration
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 13 never code together
I51.5code
I00-I99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- systemic connective tissue disorders (M30-M36)M30-M36
- transient cerebral ischemic attacks and related syndromes (G45.-)G45.-
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 3
I51.5code
Inclusion terms
- Fatty degeneration of heart or myocardium
- Myocardial disease
- Senile degeneration of heart or myocardium
Index entries leading here 7
- Syndrome — see also Disease
- Beau's I51.5
- Cardiomalacia I51.5
- Cardiomyoliposis I51.5
- Degeneration, degenerative
- myocardial, myocardium (fatty) (hyaline) (senile) I51.5
- Disease, diseased — see also Syndrome
- myocardium, myocardial I51.5
- Stricture — see also Stenosis
- myocardium, myocardial I51.5
- Myocytolysis I51.5
Alongside this code 8 same parent — I51
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 I51.7 Cardiomegaly I51.8 Other ill-defined heart diseases category I51.9 Heart disease, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.