M63.89 Disorders of muscle in diseases classified elsewhere, multiple sites
Billable ICD-10-CM code, FY2026.
Applies from M63 Disorders of muscle in diseases classified elsewhere
Excludes1 (never code together)
myopathy in cysticercosis (B69.81)
myopathy in endocrine diseases (G73.7)
myopathy in metabolic diseases (G73.7)
myopathy in sarcoidosis (D86.87)
myopathy in secondary syphilis (A51.49)
myopathy in syphilis (late) (A52.78)
myopathy in toxoplasmosis (B58.82)
myopathy in tuberculosis (A18.09)
Code first
underlying disease, such as:
leprosy (A30.-)
neoplasm (C49.-, C79.89, D21.-, D48.1-)
schistosomiasis (B65.-)
trichinellosis (B75)
MS-DRG index
Defines the logic of DRG(s) 557-558 in MDC 08.
Approximate ICD-9-CM (GEMs)
728.9 Unspecified disorder of muscle, ligament, and fascia (approximate)
Medicare Code Edits (MCE v43.1 (April 2026))
Manifestation codes as principal diagnosis: Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and are not allowed as principal diagnosis.
Diagnosis Index entries for M63.89
Leprosy › with muscle disorder › multiple sites
Schistosomiasis › with muscle disorder › multiple sites