ICD-10-CM code · FY2027
M12.27 Villonodular synovitis (pigmented), ankle and foot
Header codeNot billable: use one of the 3 billable codes below
About M12.27
- Code
- M12.27
- Billable
- No, header
- Short description
- Villonodular synovitis (pigmented), ankle and foot
- Category
- M12 Other and unspecified arthropathy
- Block
- M05-M14 Inflammatory polyarthropathies
- Chapter
- 13 Diseases of the musculoskeletal system and connective tissue
- Code set
- FY2027, October 1, 2026 to September 30, 2027
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Coding notes for M12.27
No notes of its own; the notes below apply from the codes above it.
Also applies, from M12 Other and unspecified arthropathy
Excludes1 Not coded here: never report these together with this code (use the code given instead).
Chapter 13 notes (apply to every code in it)
Note
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Codes under M12.27 3
Related codes in M12.2
- M12.20 Villonodular synovitis (pigmented), unspecified siteBillable
- M12.21 Villonodular synovitis (pigmented), shoulderHeader
- M12.22 Villonodular synovitis (pigmented), elbowHeader
- M12.23 Villonodular synovitis (pigmented), wristHeader
- M12.24 Villonodular synovitis (pigmented), handHeader
- M12.25 Villonodular synovitis (pigmented), hipHeader
- M12.26 Villonodular synovitis (pigmented), kneeHeader
- M12.28 Villonodular synovitis (pigmented), other specified siteBillable
- M12.29 Villonodular synovitis (pigmented), multiple sitesBillable
Latest research on and unspecified arthropathy
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See 2MM+ plansICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.
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