ICD-10-CM 2027 diagnosis code
N80.A4Superficial endometriosis of ureter
N80.A4 is a header code, so it can't be reported by itself. Choose one of the 4 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.A4
N80.A4 is the ICD-10-CM diagnosis code for superficial endometriosis of ureter. 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 4 subcodes must be used instead.
Within N80.A (endometriosis of bladder and ureters), N80.A4 is specifically for superficial endometriosis of ureter. Related codes cover endometriosis of bladder, unspecified depth (N80.A0), superficial endometriosis of bladder (N80.A1), deep endometriosis of bladder (N80.A2), deep endometriosis of ureter (N80.A5) and endometriosis of ureter, unspecified depth (N80.A6).
To report this condition, pick the subcode that matches the documentation: N80.A41 (ureter), N80.A42 (ureter), N80.A43 (ureters) and N80.A49 (ureter).
It was added in FY2023, effective October 1, 2022.
Specific codes under N80.A4
Coding notes
- Extrinsic endometriosis of ureter
- , if applicable, obstructive and reflux uropathy (N13.-)
Notes that apply from higher levels
Instructions written at a parent level also apply to N80.A4.
Broader instructions also apply from Chapter 14: Diseases of the genitourinary system.
Alphabetic index entries
2 entriesTerms in the official ICD-10-CM index that lead to N80.A4.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2023 (effective 10/1/2022): Added
- No changes since FY2023.
Common questions about N80.A4
Is N80.A4 billable?
- No. N80.A4 is a header code. Report one of its more specific subcodes instead.