ICD-10-CM › N00-N99 › N60-N65 › N61 Inflammatory disorders of breast › N61.2

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2021 onwards. It has never been valid for submission on its own.

Submit one of these 4 more specific codes instead:

• N61.20 Granulomatous mastitis, unspecified breast
• N61.21 Granulomatous mastitis, right breast
• N61.22 Granulomatous mastitis, left breast
• N61.23 Granulomatous mastitis, bilateral breast

What has happened to this code

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from N61 Inflammatory disorders of breast

Excludes1 - never coded here

• 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)

Inherited from the N60-N65 section Disorders of breast (N60-N65)

Excludes1 - never coded here

• disorders of breast associated with childbirth (O91-O92)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

• Mammitis
• Disease, diseased > breast
• Disorder > breast > mastitis
• Infection, infected, infective > breast
• Mastitis > granulomatous

Codes in the same group

Code	Description	Status
N61.0	Mastitis without abscess	Valid
N61.1	Abscess of the breast and nipple	Valid