M05
M05: Rheumatoid arthritis with rheumatoid factor
Non-billable headerICD-10-CM
M05 is a non-billable header ICD-10-CM code for rheumatoid arthritis with rheumatoid factor. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with M05
Their own Excludes1 notes name this code, so the conflict is not listed above.
- G63Polyneuropathy in diseases classified elsewhere
- G73.7Myopathy in diseases classified elsewhere
- I09.9Rheumatic heart disease, unspecified
- I32Pericarditis in diseases classified elsewhere
- I39Endocarditis and heart valve disorders in diseases classified elsewhere
- I41Myocarditis in diseases classified elsewhere
- I52Other heart disorders in diseases classified elsewhere
- M08Juvenile arthritis
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead M05
11 child codes. Green means billable.
- M05.0Felty's syndrome
- M05.1Rheumatoid lung disease with rheumatoid arthritis
- M05.2Rheumatoid vasculitis with rheumatoid arthritis
- M05.3Rheumatoid heart disease with rheumatoid arthritis
- M05.4Rheumatoid myopathy with rheumatoid arthritis
- M05.5Rheumatoid polyneuropathy with rheumatoid arthritis
- M05.6Rheumatoid arthritis with involvement of other organs and systems
- M05.7Rheumatoid arthritis with rheumatoid factor without organ or systems involvement
- M05.8Other rheumatoid arthritis with rheumatoid factor
- M05.9Rheumatoid arthritis with rheumatoid factor, unspecified
- M05.AAbnormal rheumatoid factor and anti-citrullinated protein antibody with rheumatoid arthritis