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N80.542

Billable

Deep endometriosis of the appendix

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

What This Code Means

Endometrial tissue deeply penetrates the appendix wall, extending into the muscle layer or beyond.

Coding Tips

  • Deep appendiceal endometriosis may mimic appendicitis and can lead to appendectomy
  • Review surgical pathology reports to confirm endometriosis diagnosis and depth of invasion

Code Hierarchy

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