N61

N61: Inflammatory disorders of breast

Non-billable headerICD-10-CM

N61 is a non-billable header ICD-10-CM code for inflammatory disorders of breast. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead N61

3 child codes. Green means billable.

N61.0Mastitis without abscess
N61.1Abscess of the breast and nipple
N61.2Granulomatous mastitis