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M21.90

Billable

Unspecified acquired deformity of unspecified limb

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

What This Code Means

An acquired deformity of an unspecified limb where the specific type and location of the deformity are not clearly identified in the medical record.

Coding Tips

  • This is a very non-specific code; attempt to obtain more detail about which limb and what type of deformity
  • Review clinical documentation to determine if a more specific M21 code applies

Code Hierarchy

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