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M35.4

Billable

Diffuse (eosinophilic) fasciitis

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

What This Code Means

Diffuse eosinophilic fasciitis is a rare inflammatory condition affecting the connective tissue layer beneath the skin, causing tightness, swelling, and restricted movement.

Coding Tips

  • •This is also known as fasciitis with eosinophilia; ensure documentation distinguishes this from other forms of fasciitis
  • •Verify eosinophilia is documented in lab results to support this specific diagnosis

Code Hierarchy

└M35Other systemic involvement of connective tissue└M35.4Diffuse (eosinophilic) fasciitis
└M35.4Diffuse (eosinophilic) fasciitis

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