M05.A
BillableAbnormal rheumatoid factor and anti-citrullinated protein antibody with rheumatoid arthritis
M05.A is the ICD-10-CM code for Abnormal rheumatoid factor and anti-citrullinated protein antibody with rheumatoid arthritis. It is a billable, specific code valid for reimbursement.
M00-M99 Diseases of the musculoskeletal system and connective tissue
Frequently asked questions
- What is ICD-10 code M05.A?
- M05.A is the ICD-10-CM code for "Abnormal rheumatoid factor and anti-citrullinated protein antibody with rheumatoid arthritis". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
- Is M05.A a billable code?
- Yes — M05.A is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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