ICD-10-CM 2027 diagnosis code
N80.3Endometriosis of pelvic peritoneum
N80.3 is a header code, so it can't be reported by itself. Choose one of the 13 more specific codes beneath it.
Code last changed in FY2023 (effective October 1, 2022). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About N80.3
N80.3 is the ICD-10-CM diagnosis code for endometriosis of pelvic peritoneum. It belongs to category N80 (endometriosis), 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.
Within N80 (endometriosis), N80.3 is specifically for endometriosis of pelvic peritoneum. Related codes cover of uterus (N80.0), of ovary (N80.1), of fallopian tube (N80.2), of rectovaginal septum and vagina (N80.4), of intestine (N80.5), in cutaneous scar (N80.6), other endometriosis (N80.8), unspecified (N80.9) and 4 more.
To report this condition, pick the subcode that matches the documentation: N80.30 (unspecified), N80.31 (cul-de-sac), N80.32 (cul-de-sac), N80.33 (sidewall), N80.34 (sidewall), N80.35 (depth), N80.36 (brim), N80.37 (brim) and 5 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2023 (expanded into subcodes).
Before ICD-10, this condition was coded in ICD-9-CM as 617.3 (endometriosis of pelvic peritoneum).
Specific codes under N80.3
- 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
Notes that apply from higher levels
Instructions written at a parent level also apply to N80.3.
Broader instructions also apply from Chapter 14: Diseases of the genitourinary system.
ICD-9-CM equivalent
Converter →- 617.3Endometriosis of pelvic peritoneumexact
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
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)
- FY2023 (effective 10/1/2022): Expanded — no longer billable