N61.21Billable

Granulomatous mastitis, right breast

Chapter
14. Diseases of the genitourinary system
Category
N61
Effective date
October 1, 2026

Related codes in category N61

N61Inflammatory disorders of breastN61.0Mastitis without abscessYesN61.1Abscess of the breast and nippleYesN61.2Granulomatous mastitisN61.20Granulomatous mastitis, unspecified breastYesN61.22Granulomatous mastitis, left breastYesN61.23Granulomatous mastitis, bilateral breastYes

Frequently asked questions

What is ICD-10 code N61.21?

N61.21 is an ICD-10-CM diagnosis code for Granulomatous mastitis, right breast.

Is N61.21 a billable code?

Yes. N61.21 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is N61.21 in?

N61.21 falls under Chapter 14: Diseases of the genitourinary system.

When did N61.21 become effective?

N61.21 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to N61.21?

N61.21 belongs to category N61, which includes 7 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.