M63*Disorders of muscle in diseases classified elsewhere
Code usage status
Primary diagnosis
Must not be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use M63* directly
Use the most specific code supported by the record.
- Chapter XIII
- musculoskeletal system and connective tissue
- Group M60-M79
- Rối loạn mô mềm
- Official Vietnamese name
- Rối loạn cơ do bệnh phân loại mục khác
- Additional WHO coding guidance
- Excl.: myopathy in: endocrine diseases (G73.5*) metabolic diseases (G73.6*)
Related M63 codes
M63.0*
Myositis in bacterial diseases classified elsewhere
M63.1*
Myositis in protozoal and parasitic infections classified elsewhere
M63.2*
Myositis in other infectious diseases classified elsewhere
M63.3*
Myositis in sarcoidosis (D86.8)
M63.8*
Other disorders of muscle in diseases classified elsewhere
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
