M35
⚠ Non-billable (Header)Other systemic involvement of connective tissue
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.
❌ Excludes1
directCannot be coded with M35
- • reactive perforating collagenosis (L87.1)
Child Codes (10)
M35.0Sjögren syndromeM35.1Other overlap syndromesM35.2Behçet's diseaseM35.3Polymyalgia rheumaticaM35.4Diffuse (eosinophilic) fasciitisM35.5Multifocal fibrosclerosisM35.6Relapsing panniculitis [Weber-Christian]M35.7Hypermobility syndromeM35.8Other specified systemic involvement of connective tissueM35.9Systemic involvement of connective tissue, unspecified
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CodeM35
BillableNo — Header code
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes11 rule(s)
Excludes20 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)