ICD-10-CM 2027 diagnosis code
N61Inflammatory disorders of breast
N61 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.
Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About N61
N61 is the ICD-10-CM diagnosis code for inflammatory disorders of breast. It belongs to 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 3 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: N61.0 (abscess), N61.1 (nipple) and N61.2 (mastitis).
Don't report N61 together with the conditions in its Excludes1 note: inflammatory carcinoma of breast (C50.A-), inflammatory disorder of breast associated with childbirth (O91.-), neonatal infective mastitis (P39.0) and thrombophlebitis of breast [Mondor's disease] (I80.8).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2017 (expanded into subcodes).
Specific codes under N61
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to N61.
Broader instructions also apply from N60-N65 Disorders of breast and Chapter 14: Diseases of the genitourinary system.
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)
- FY2017 (effective 10/1/2016): Expanded — no longer billable
Common questions about N61
Is N61 billable?
- No. N61 is a header code. Report one of its more specific subcodes instead.