M05
Non-billableRheumatoid arthritis with rheumatoid factor
M05 is the ICD-10-CM code for Rheumatoid arthritis with rheumatoid factor. It is a non-billable category code — use a more specific child code such as M05.0 for billing.
- Status
- Header (non-billable)
- Chapter
- M00-M99
- Subcodes
- 11
- Edition
- FY2026
M00-M99 Diseases of the musculoskeletal system and connective tissue
What this means — in plain language
MedlinePlus · NIHWhat is rheumatoid arthritis? Rheumatoid arthritis (RA) is a form of arthritis that causes pain, swelling, and stiffness in your joints. RA is an autoimmune disease . Although it is most common in the wrist and fingers, this disease can cause your immune system to attack any joint tissue. The inflammation (swelling) that comes with RA can also affect other body parts. Inflammation could cause medical issues in your…
Read more about Rheumatoid Arthritis at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes1 — not coded here
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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