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M12.28

Billable

Villonodular synovitis (pigmented), other specified site

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A condition where abnormal tissue growth occurs in the joint lining at a specific location other than the shoulder, elbow, wrist, knee, or ankle, causing inflammation and pigmentation.

Coding Tips

  • •Use this code only when the villonodular synovitis affects a site not specified by other M12.2x codes
  • •Document the specific anatomical site affected to ensure accurate coding and clinical clarity

Code Hierarchy

└M12Other and unspecified arthropathy└M12.2Villonodular synovitis (pigmented)└M12.28Villonodular synovitis (pigmented), other specified site
└M12.28Villonodular synovitis (pigmented), other specified site

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