M33.9
⚠ Non-billable (Header)Dermatopolymyositis, unspecified
Diseases of the musculoskeletal system and connective tissue (M00-M99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for M33.9
Child Codes (5)
M33.90Dermatopolymyositis, unspecified, organ involvement unspecifiedM33.91Dermatopolymyositis, unspecified with respiratory involvementM33.92Dermatopolymyositis, unspecified with myopathyM33.93Dermatopolymyositis, unspecified without myopathyM33.99Dermatopolymyositis, unspecified with other organ involvement
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CodeM33.9
BillableNo — Header code
ParentM33
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes10 rule(s)
Excludes20 note(s)
Child codes5
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)