Skip to content

M66.239

Billable

Spontaneous rupture of extensor tendons, unspecified forearm

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

What This Code Means

A spontaneous breaking or tearing of the extensor tendons in an unspecified forearm, occurring without a known injury or trauma.

Coding Tips

  • Use only when the specific side (right or left) cannot be determined from documentation
  • Query the provider for clarification on laterality to assign a more specific code if possible

Code Hierarchy

Open M66.239 in the Interactive Encoder

See full code details, AI coding tips, HCC mappings, and related codes in our interactive encoder. Start your 14-day Pro trial — no credit card required.