M05.779
✓ BillableRheumatoid arthritis with rheumatoid factor of unspecified ankle and foot without organ or systems involvement
Diseases of the musculoskeletal system and connective tissue (M00-M99)
✅ No additional coding notes for M05.779
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CodeM05.779
BillableYes
ParentM05.77
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes10 rule(s)
Excludes20 note(s)
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)