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M99.86

Billable

Other biomechanical lesions of lower extremity

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

What This Code Means

Structural or mechanical problems in the legs and feet that affect how bones, joints, and tissues move and function.

Coding Tips

  • •Document the specific location (knee, ankle, foot, thigh) for clarity and potential additional specificity
  • •Distinguish from osteoarthritis (M17-M19) or other joint disorders that may have different treatment approaches

Code Hierarchy

└M99Biomechanical lesions, not elsewhere classified└M99.8Other biomechanical lesions└M99.86Other biomechanical lesions of lower extremity
└M99.86Other biomechanical lesions of lower extremity

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