Disorders of muscle in diseases classified elsewhere, unspecified thigh
Billable / specific
M63.859 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Includes (from M63)
- Note: Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Excludes1
Not coded here — never report together with this code.
- dermatopolymyositis (M33.-) (from M63)
- myopathy in amyloidosis (E85.-) (from M63)
- myopathy in polyarteritis nodosa (M30.0) (from M63)
- myopathy in rheumatoid arthritis (M05.32) (from M63)
- myopathy in scleroderma (M34.-) (from M63)
- myopathy in Sjögren's syndrome (M35.03) (from M63)
- myopathy in systemic lupus erythematosus (M32.-) (from M63)
- myopathy in cysticercosis (B69.81) (from M63)
- myopathy in endocrine diseases (G73.7) (from M63)
- myopathy in metabolic diseases (G73.7) (from M63)
- myopathy in sarcoidosis (D86.87) (from M63)
- myopathy in secondary syphilis (A51.49) (from M63)
- myopathy in syphilis (late) (A52.78) (from M63)
- myopathy in toxoplasmosis (B58.82) (from M63)
- myopathy in tuberculosis (A18.09) (from M63)
Excludes2
Not included here — may be reported together when both conditions exist.
- arthropathic psoriasis (L40.5-) (from M63)
- certain conditions originating in the perinatal period (P04-P96) (from M63)
- certain infectious and parasitic diseases (A00-B99) (from M63)
- compartment syndrome (traumatic) (T79.A-) (from M63)
- complications of pregnancy, childbirth and the puerperium (O00-O9A) (from M63)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from M63)
- endocrine, nutritional and metabolic diseases (E00-E88) (from M63)
- injury, poisoning and certain other consequences of external causes (S00-T88) (from M63)
- neoplasms (C00-D49) (from M63)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from M63)
- muscular dystrophies and myopathies (G71-G72) (from M63)
Code first
Sequence the underlying condition first.
Parent code
- M63.85Disorders of muscle in diseases classified elsewhere, thighHeader