M12.2 – Villonodular synovitis (pigmented)
ICD-10-CM 2027 diagnosis code · Inflammatory polyarthropathies
- Code
M12.2(claims format:M122)- Description
- Villonodular synovitis (pigmented)
- Billable
- No – use a more specific code below
- 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
- M12
Billable codes under M12.2
M12.2 is a header code and cannot be used on claims. Choose the most specific code:
- M12.20 – Villonodular synovitis (pigmented), unspecified siteBillable
- M12.21 – Villonodular synovitis (pigmented), shoulderHeader (more codes below)
- M12.22 – Villonodular synovitis (pigmented), elbowHeader (more codes below)
- M12.23 – Villonodular synovitis (pigmented), wristHeader (more codes below)
- M12.24 – Villonodular synovitis (pigmented), handHeader (more codes below)
- M12.25 – Villonodular synovitis (pigmented), hipHeader (more codes below)
- M12.26 – Villonodular synovitis (pigmented), kneeHeader (more codes below)
- M12.27 – Villonodular synovitis (pigmented), ankle and footHeader (more codes below)
- M12.28 – Villonodular synovitis (pigmented), other specified siteBillable
- M12.29 – Villonodular synovitis (pigmented), multiple sitesBillable
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M12 – Other and unspecified arthropathy
Index terms for M12.2
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in M12
- M12.0 – Chronic postrheumatic arthropathy [Jaccoud]Header
- M12.1 – Kaschin-Beck diseaseHeader
- M12.3 – Palindromic rheumatismHeader
- M12.4 – Intermittent hydrarthrosisHeader
- M12.5 – Traumatic arthropathyHeader
- M12.8 – Other specific arthropathies, not elsewhere classifiedHeader
- M12.9 – Arthropathy, unspecifiedBillable
Frequently asked questions
What is ICD-10 code M12.2?
M12.2 is the ICD-10-CM code for villonodular synovitis (pigmented), in the block M05-M14 (Inflammatory polyarthropathies).
Is M12.2 a billable code?
No. M12.2 is a header code with more specific child codes; report one of the billable codes listed above.
What category does M12.2 belong to?
It belongs to category M12 – Other and unspecified arthropathy.
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.