M05.79 – Rheumatoid arthritis with rheumatoid factor of multiple sites without organ or systems involvement
ICD-10-CM 2027 diagnosis code · Inflammatory polyarthropathies
- Code
M05.79(claims format:M0579)- Description
- Rheumatoid arthritis with rheumatoid factor of multiple sites without organ or systems involvement
- Short description
- Rheu arthritis w rheu factor mult site w/o org/sys involv
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M05-M14 Inflammatory polyarthropathies
- Parent codes
- M05 › M05.7
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M05 – Rheumatoid arthritis with rheumatoid factor
Index terms for M05.79
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in M05.7
- M05.70 – Rheumatoid arthritis with rheumatoid factor of unspecified site without organ or systems involvementBillable
- M05.71 – Rheumatoid arthritis with rheumatoid factor of shoulder without organ or systems involvementHeader
- M05.72 – Rheumatoid arthritis with rheumatoid factor of elbow without organ or systems involvementHeader
- M05.73 – Rheumatoid arthritis with rheumatoid factor of wrist without organ or systems involvementHeader
- M05.74 – Rheumatoid arthritis with rheumatoid factor of hand without organ or systems involvementHeader
- M05.75 – Rheumatoid arthritis with rheumatoid factor of hip without organ or systems involvementHeader
- M05.76 – Rheumatoid arthritis with rheumatoid factor of knee without organ or systems involvementHeader
- M05.77 – Rheumatoid arthritis with rheumatoid factor of ankle and foot without organ or systems involvementHeader
- M05.7A – Rheumatoid arthritis with rheumatoid factor of other specified site without organ or systems involvementBillable
Frequently asked questions
What is ICD-10 code M05.79?
M05.79 is the ICD-10-CM code for rheumatoid arthritis with rheumatoid factor of multiple sites without organ or systems involvement, in the block M05-M14 (Inflammatory polyarthropathies).
Is M05.79 a billable code?
Yes. M05.79 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M05.79 belong to?
It belongs to category M05 – Rheumatoid arthritis with rheumatoid factor.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.