ICD-10-CM · Chapter 14 · N00-N99
N61 Inflammatory disorders of breast
Excludes 1 (cannot be coded together)
- 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)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| N61..0 | Mastitis without abscess | Yes |
| N61..1 | Abscess of the breast and nipple | Yes |
| N61..2 | Granulomatous mastitis | No |
| N61..20 | Granulomatous mastitis, unspecified breast | Yes |
| N61..21 | Granulomatous mastitis, right breast | Yes |
| N61..22 | Granulomatous mastitis, left breast | Yes |
| N61..23 | Granulomatous mastitis, bilateral breast | Yes |
Last reviewed: September 2026