N61.1 Abscess of the breast and nipple

Billable ICD-10-CM code, FY2026.

Applicable to

• Abscess (acute) (chronic) (nonpuerperal) of areola
• Abscess (acute) (chronic) (nonpuerperal) of breast
• Carbuncle of breast
• Mastitis with abscess

Applies from N61 Inflammatory disorders of breast

Excludes1 (never code 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)

MS-DRG index

Defines the logic of DRG(s) 600-601 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 611.0 Inflammatory disease of breast (approximate)

Code annotations containing back-references to N61.1

Back-references to N61.1

• Type 2 Excludes: L02.2 Cutaneous abscess, furuncle and carbuncle of trunk ("abscess of breast (N61.1)")

Diagnosis Index entries for N61.1

• Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › areola (acute) (chronic) (nonpuerperal)
• Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › breast (acute) (chronic) (nonpuerperal)
• Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › nipple
• Carbuncle › breast
• Furuncle › breast
• Mastitis (acute) (diffuse) (nonpuerperal) (subacute) › with abscess
• Suppuration, suppurative › breast
• Suppuration, suppurative › mammary gland
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › breast

Nearby codes

• N61 Inflammatory disorders of breast
• N61.0 Mastitis without abscess
• N61.1 Abscess of the breast and nipple (this code)
• N61.2 Granulomatous mastitis
• N61.20 Granulomatous mastitis, unspecified breast
• N61.21 Granulomatous mastitis, right breast
• N61.22 Granulomatous mastitis, left breast
• N61.23 Granulomatous mastitis, bilateral breast