2026
ICD-10-CM
Diagnosis
Code

N61 Inflammatory disorders of breast

  • Non-billable
  • 2016–2026

N61 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Inflammatory disorders of breast.

Type 1 excludes

  • Inflammatory carcinoma of breast (C50.A-)

  • Inflammatory disorder of breast associated with childbirth (O91.-)

  • Neonatal infective mastitis (P39.0)

  • Thrombophlebitis of breast [Mondor's disease] (I80.8)

Codes

Versions

  1. 2026

    Code changed

    • Type 1 excludes

        • inflammatory carcinoma of breast (C50.9)
        • inflammatory disorder of breast associated with childbirth (O91.-)
        • neonatal infective mastitis (P39.0)
        • thrombophlebitis of breast [Mondor's disease] (I80.8)
        • inflammatory carcinoma of breast (C50.A-)
        • inflammatory disorder of breast associated with childbirth (O91.-)
        • neonatal infective mastitis (P39.0)
        • thrombophlebitis of breast [Mondor's disease] (I80.8)

  2. 2025

    No changes

  3. 2024

    No changes

  4. 2023

    No changes

  5. 2022

    No changes

  6. 2021

    No changes

  7. 2020

    No changes

  8. 2019

    No changes

  9. 2018

    No changes

  10. 2017

    Code changed

    • Inclusion term

        • Abscess (acute) (chronic) (nonpuerperal) of areola
        • Abscess (acute) (chronic) (nonpuerperal) of breast
        • Carbuncle of breast
        • Infective mastitis (acute) (subacute) (nonpuerperal)
        • Mastitis (acute) (subacute) (nonpuerperal) NOS

  11. 2016

    New code