Deep endometriosis of bilateral fallopian tubes

This code signifies the presence of deeply infiltrating endometrial tissue within the walls of both fallopian tubes. This condition is a form of endometriosis where the ectopic endometrial implants penetrate more than 5mm beneath the peritoneal surface or involve the muscularis propria of the fallopian tubes. It can lead to significant pain, inflammation, and potential infertility.

Assign this code when documentation explicitly states "deep endometriosis" affecting "bilateral fallopian tubes." This diagnosis is typically confirmed through surgical visualization (e.g., laparoscopy) with biopsy, or advanced imaging studies. Ensure the medical record clearly distinguishes deep infiltration from superficial involvement.

• Do not use this code for superficial endometriosis of the fallopian tubes; a different subcategory exists for superficial involvement.
• Verify laterality. This code specifically indicates involvement of both fallopian tubes.
• Consider sequencing this code after any codes for associated complications, such as infertility (N97.1) or chronic pelvic pain (R10.2).