M63 ICD-10-CM Code: Disorders of muscle in diseases classified elsewhere
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
M63Disorders of muscle in diseases classified elsewhere
ICD-10-CM diagnosis code · United States clinical modification
Where M63 sits
- 1
Chapter 13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2
Section
Disorders of muscles (M60-M63)
- 3
Category M63
Disorders of muscle in diseases classified elsewhere
- 4
Code M63
Disorders of muscle in diseases classified elsewhere
Codes under M63
M63 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
No inclusion terms are listed for M63.
Code first
- underlying disease, such as:
- leprosy (A30.-)
- neoplasm (C49.-, C79.89, D21.-, D48.1-)
- schistosomiasis (B65.-)
- trichinellosis (B75)
Use additional code
No “use additional code” instruction is listed for M63.
Excludes1
Conditions that should not be reported together with this code.
- 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)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for M63.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code M63 mean?
M63 is the FY 2027 U.S. ICD-10-CM code for “Disorders of muscle in diseases classified elsewhere.”
Is M63 a billable or specific ICD-10-CM code?
No. M63 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is M63 located in ICD-10-CM?
M63 is listed in Chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99), within Disorders of muscles (M60-M63) (M60–M63), under category M63, Disorders of muscle in diseases classified elsewhere.
What coding notes are listed for M63?
No inclusion terms are listed for M63 in this reference record. Code-first instructions: underlying disease, such as:; leprosy (A30.-); neoplasm (C49.-, C79.89, D21.-, D48.1-); schistosomiasis (B65.-); trichinellosis (B75). Excludes1 notes: 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). No Excludes2 note is listed.