N61.2

Granulomatous mastitis

FY2027Chapter 14: Diseases of the genitourinary system/N60–N65 Disorders of breast

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

N61.2 is a non-billable ICD-10-CM code header for granulomatous mastitis. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are N61.20 Granulomatous mastitis, unspecified breast; N61.21 Granulomatous mastitis, right breast; N61.22 Granulomatous mastitis, left breast and N61.23 Granulomatous mastitis, bilateral breast. Its coding notes include 5 Excludes1 entries and 8 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from N61 Inflammatory disorders of breast
  • 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)
Also from chapter/block level (1 note)
Inherited from N60–N65 Disorders of breast
  • disorders of breast associated with childbirth (O91-O92)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (8 notes)
Inherited from Chapter 14 Diseases of the genitourinary system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 1 entry

More specific codes under N61.2 4