ICD-10-CM 2027 diagnosis code
N80Endometriosis
N80 is a header code, so it can't be reported by itself. Choose one of the 13 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About N80
N80 is the ICD-10-CM diagnosis code for endometriosis. It belongs to block N80-N98 (noninflammatory disorders of female genital tract) and chapter 14 (diseases of the genitourinary system). It is a header code, so it can't be reported by itself; one of its 13 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: N80.0 (of uterus), N80.1 (of ovary), N80.2 (of fallopian tube), N80.3 (of pelvic peritoneum), N80.4 (of rectovaginal septum and vagina), N80.5 (of intestine), N80.6 (in cutaneous scar), N80.8 (endometriosis) and 5 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under N80
- N80.0Endometriosis of uterus
- N80.1Endometriosis of ovary
- N80.2Endometriosis of fallopian tube
- N80.3Endometriosis of pelvic peritoneum
- N80.30Endometriosis of pelvic peritoneum, unspecifiedBillable
- N80.31Endometriosis of the anterior cul-de-sac
- N80.32Endometriosis of the posterior cul-de-sac
- N80.33Superficial endometriosis of the pelvic sidewall
- N80.34Deep endometriosis of the pelvic sidewall
- N80.35Endometriosis of the pelvic sidewall, unspecified depth
- N80.351Endometriosis of the right pelvic sidewall, unspecified depthBillable
- N80.352Endometriosis of the left pelvic sidewall, unspecified depthBillable
- N80.353Endometriosis of bilateral pelvic sidewall, unspecified depthBillable
- N80.359Endometriosis of pelvic sidewall, unspecified side, unspecified depthBillable
- N80.36Superficial endometriosis of the pelvic brim
- N80.37Deep endometriosis of the pelvic brim
- N80.38Endometriosis of the pelvic brim, unspecified depth
- N80.39Endometriosis of other pelvic peritoneum
- N80.3ASuperficial endometriosis of the uterosacral ligament(s)
- N80.3A1Superficial endometriosis of the right uterosacral ligamentBillable
- N80.3A2Superficial endometriosis of the left uterosacral ligamentBillable
- N80.3A3Superficial endometriosis of the bilateral uterosacral ligament(s)Billable
- N80.3A9Superficial endometriosis of the uterosacral ligament(s), unspecified sideBillable
- N80.3BDeep endometriosis of the uterosacral ligament(s)
- N80.3CEndometriosis of the uterosacral ligament(s), unspecified depth
- N80.3C1Endometriosis of the right uterosacral ligament, unspecified depthBillable
- N80.3C2Endometriosis of the left uterosacral ligament, unspecified depthBillable
- N80.3C3Endometriosis of bilateral uterosacral ligament(s), unspecified depthBillable
- N80.3C9Endometriosis of the uterosacral ligament(s), unspecified side, unspecified depthBillable
- N80.4Endometriosis of rectovaginal septum and vagina
- N80.5Endometriosis of intestine
- N80.6Endometriosis in cutaneous scarBillable
- N80.8Other endometriosisBillable
- N80.9Endometriosis, unspecifiedBillable
- N80.AEndometriosis of bladder and ureters
- N80.BEndometriosis of cardiothoracic space
- N80.CEndometriosis of the abdomen
- N80.C0Endometriosis of the abdomen, unspecifiedBillable
- N80.C1Endometriosis of the anterior abdominal wall
- N80.C2Endometriosis of the umbilicusBillable
- N80.C3Endometriosis of the inguinal canalBillable
- N80.C4Endometriosis of extra-pelvic abdominal peritoneumBillable
- N80.C9Endometriosis of other site of abdomenBillable
- N80.DEndometriosis of the pelvic nerves
- N80.D0Endometriosis of the pelvic nerves, unspecifiedBillable
- N80.D1Endometriosis of the sacral splanchnic nervesBillable
- N80.D2Endometriosis of the sacral nerve rootsBillable
- N80.D3Endometriosis of the obturator nerveBillable
- N80.D4Endometriosis of the sciatic nerveBillable
- N80.D5Endometriosis of the pudendal nerveBillable
- N80.D6Endometriosis of the femoral nerveBillable
- N80.D9Endometriosis of other pelvic nerveBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to N80.
Broader instructions also apply from Chapter 14: Diseases of the genitourinary system.
Codes whose notes reference N80
- N85Excludes1
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about N80
Is N80 billable?
- No. N80 is a header code. Report one of its more specific subcodes instead.