M05.8
⚠ Non-billable (Header)Other rheumatoid arthritis with rheumatoid factor
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
inherited from M05Rules from parent category M05: Rheumatoid arthritis with rheumatoid factor
- • rheumatic fever (I00)
- • juvenile rheumatoid arthritis (M08.-)
- • rheumatoid arthritis of spine (M45.-)
Child Codes (10)
M05.80Other rheumatoid arthritis with rheumatoid factor of unspecified siteM05.81Other rheumatoid arthritis with rheumatoid factor of shoulderM05.82Other rheumatoid arthritis with rheumatoid factor of elbowM05.83Other rheumatoid arthritis with rheumatoid factor of wristM05.84Other rheumatoid arthritis with rheumatoid factor of handM05.85Other rheumatoid arthritis with rheumatoid factor of hipM05.86Other rheumatoid arthritis with rheumatoid factor of kneeM05.87Other rheumatoid arthritis with rheumatoid factor of ankle and footM05.89Other rheumatoid arthritis with rheumatoid factor of multiple sitesM05.8AOther rheumatoid arthritis with rheumatoid factor of other specified site
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CodeM05.8
BillableNo — Header code
ParentM05
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes13 rule(s)
Excludes20 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)