ICD-10-CM 2027
ICD-10 code for fallopian tube endometriosis
From the official ICD-10-CM alphabetic index entry “Endometriosis › fallopian tube (unspecified depth)”. Page updated September 29, 2026.
About coding fallopian tube endometriosis
The ICD-10-CM code for fallopian tube endometriosis is N80.20 (Endometriosis of fallopian tube, unspecified depth). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on N80.20.
Within N80.2, choose N80.20 (unspecified depth) only when documentation doesn't support a more specific option: superficial endometriosis of fallopian tube (N80.21) and deep endometriosis of the fallopian tube (N80.22).
To report this condition, pick the subcode that matches the documentation: N80.201 (depth), N80.202 (depth), N80.203 (depth) and N80.209 (depth).
It was added in FY2023, effective October 1, 2022.
More specific fallopian tube endometriosis codes (official index)
Common questions about fallopian tube endometriosis ICD-10 codes
What is the ICD-10 code for fallopian tube endometriosis?
- N80.20 — Endometriosis of fallopian tube, unspecified depth (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: N80.22, N80.21.
What is the ICD-10 code for deep fallopian tube endometriosis?
- N80.22 — Deep endometriosis of the fallopian tube (header code; choose a more specific subcode).
What is the ICD-10 code for superficial fallopian tube endometriosis?
- N80.21 — Superficial endometriosis of fallopian tube (header code; choose a more specific subcode).
Is N80.20 billable?
- No. N80.20 is a header code. Report one of its more specific subcodes instead.