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M99.73

Billable

Connective tissue and disc stenosis of intervertebral foramina of lumbar region

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 lower back due to connective tissue overgrowth or disc material, which can cause lower back pain, leg pain, or weakness.

Coding Tips

  • •Specify the lumbar level (L1-L5) and document whether the stenosis is central, lateral, or foraminal
  • •Clarify the type of soft tissue involvement such as disc bulge, ligamentum flavum hypertrophy, or facet joint changes

Code Hierarchy

└M99Biomechanical lesions, not elsewhere classified└M99.7Connective tissue and disc stenosis of intervertebral foramina└M99.73Connective tissue and disc stenosis of intervertebral foramina of lumbar region
└M99.73Connective tissue and disc stenosis of intervertebral foramina of lumbar region

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