Is M05.A a billable code?
Yes. M05.A is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
M05.A: Abnormal rheumatoid factor and anti-citrullinated protein antibody with rheumatoid arthritis
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
M05.A is a billable ICD-10-CM diagnosis code for abnormal rheumatoid factor and anti-citrullinated protein antibody with rheumatoid arthritis. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with M05.A already added.Good Faith EstimateStart a cost estimate with M05.A already added.CMS-1500 Claim FormFill a claim form with M05.A in box 21.
Other codes in M05 Rheumatoid arthritis with rheumatoid factor
- M05.0Felty's syndromeheader
- M05.1Rheumatoid lung disease with rheumatoid arthritisheader
- M05.2Rheumatoid vasculitis with rheumatoid arthritisheader
- M05.3Rheumatoid heart disease with rheumatoid arthritisheader
- M05.4Rheumatoid myopathy with rheumatoid arthritisheader
- M05.5Rheumatoid polyneuropathy with rheumatoid arthritisheader
- M05.6Rheumatoid arthritis with involvement of other organs and systemsheader
- M05.7Rheumatoid arthritis with rheumatoid factor without organ or systems involvementheader
- M05.8Other rheumatoid arthritis with rheumatoid factorheader
- M05.9Rheumatoid arthritis with rheumatoid factor, unspecified
M05.A questions
What does M05.A mean?
M05.A is the ICD-10-CM code for Abnormal rheumatoid factor and anti-citrullinated protein antibody with rheumatoid arthritis. It is in chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.