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G57.91

Billable

Unspecified mononeuropathy of right lower limb

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

What This Code Means

Damage to a single nerve in the right leg that causes weakness, numbness, or pain, but the specific nerve affected is not identified.

Coding Tips

  • •Use this code only when the specific nerve cannot be determined; if the nerve is identified (e.g., peroneal, tibial), use the more specific code
  • •Verify laterality is documented as right; use G57.90 for left or G57.9X for bilateral cases

Code Hierarchy

└G57Mononeuropathies of lower limb└G57.9Unspecified mononeuropathy of lower limb└G57.91Unspecified mononeuropathy of right lower limb
└G57.91Unspecified mononeuropathy of right lower limb

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