ICD-10-CM 2027 diagnosis code
N61.2Granulomatous mastitis
N61.2 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 FY2021 (effective October 1, 2020). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About N61.2
N61.2 is the ICD-10-CM diagnosis code for granulomatous mastitis. It belongs to category N61 (inflammatory disorders of breast), block N60-N65 (disorders of breast) 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 N61 (inflammatory disorders of breast), N61.2 is specifically for granulomatous mastitis. Related codes cover mastitis without abscess (N61.0) and abscess of the breast and nipple (N61.1).
To report this condition, pick the subcode that matches the documentation: N61.20 (unspecified breast), N61.21 (right breast), N61.22 (left breast) and N61.23 (bilateral breast).
It was added in FY2021, effective October 1, 2020.
Specific codes under N61.2
Notes that apply from higher levels
Instructions written at a parent level also apply to N61.2.
Broader instructions also apply from N60-N65 Disorders of breast and Chapter 14: Diseases of the genitourinary system.
Alphabetic index entries
1 entriesTerms in the official ICD-10-CM index that lead to N61.2.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2021 (effective 10/1/2020): Added
- No changes since FY2021.
Common questions about N61.2
Is N61.2 billable?
- No. N61.2 is a header code. Report one of its more specific subcodes instead.