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M99.66

Billable

Osseous and subluxation stenosis of intervertebral foramina of lower extremity

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

What This Code Means

Narrowing of the nerve passages in the spine due to bone overgrowth or misalignment affecting the lower extremity, potentially causing leg pain or weakness.

Coding Tips

  • •Document the specific level of stenosis (lumbar or sacral) and whether symptoms radiate to the leg
  • •Differentiate between osseous stenosis and other causes like disc herniation to ensure accurate code selection

Code Hierarchy

└M99Biomechanical lesions, not elsewhere classified└M99.6Osseous and subluxation stenosis of intervertebral foramina└M99.66Osseous and subluxation stenosis of intervertebral foramina of lower extremity
└M99.66Osseous and subluxation stenosis of intervertebral foramina of lower extremity

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