M63.819 – Disorders of muscle in diseases classified elsewhere, unspecified shoulder

ICD-10-CM 2027 diagnosis code · Disorders of muscles

Billable code

ICD-10-CM code M63.819

Code: M63.819 (claims format: M63819)
Description: Disorders of muscle in diseases classified elsewhere, unspecified shoulder
Short description: Disorders of muscle in diseases classd elswhr, unsp shoulder
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M60-M63 Disorders of muscles
Parent codes: M63 › M63.8 › M63.81

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M63 – Disorders of muscle in diseases classified elsewhere

Excludes1 (not coded here):

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)

Block M60-M63

Excludes1 (not coded here):

dermatopolymyositis (M33.-)
myopathy in amyloidosis (E85.-)
myopathy in polyarteritis nodosa (M30.0)
myopathy in rheumatoid arthritis (M05.32)
myopathy in scleroderma (M34.-)
myopathy in Sjögren's syndrome (M35.03)
myopathy in systemic lupus erythematosus (M32.-)

Excludes2 (not included here):

muscular dystrophies and myopathies (G71-G72)

Related codes in M63.81

Frequently asked questions

What is ICD-10 code M63.819?

M63.819 is the ICD-10-CM code for disorders of muscle in diseases classified elsewhere, unspecified shoulder, in the block M60-M63 (Disorders of muscles).

Is M63.819 a billable code?

Yes. M63.819 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M63.819 belong to?

It belongs to category M63 – Disorders of muscle in diseases classified elsewhere.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.