Endometriosis of fallopian tube

This code signifies the presence of endometrial-like tissue growing abnormally within the fallopian tube. This ectopic tissue can cause inflammation, scarring, and potentially obstruct the fallopian tube, impacting fertility.

Apply this code when documentation explicitly states endometriosis affecting the fallopian tube. This diagnosis is often made during laparoscopic examination or histopathological analysis of resected tissue.

• Differentiate from endometriosis of the ovary (617.1) or uterus (617.0).
• Ensure the documentation specifies the fallopian tube as the affected site, not just "pelvic endometriosis."
• Consider sequencing with infertility codes (628.x) if applicable and supported by documentation.