ICD-10-CM 2027
ICD-10 code for nipple abscess
From the official ICD-10-CM alphabetic index entry “Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › nipple”. Page updated September 29, 2026.
About coding nipple abscess
The ICD-10-CM code for nipple abscess is N61.1 (Abscess of the breast and nipple).
Within N61 (inflammatory disorders of breast), N61.1 is specifically for abscess of the breast and nipple. Related codes cover mastitis without abscess (N61.0) and granulomatous mastitis (N61.2).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 600 (Non-Malignant Breast Disorders with CC/MCC, relative weight 0.9975) and DRG 601 (Non-Malignant Breast Disorders without CC/MCC, relative weight 0.6017), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific nipple abscess codes (official index)
- associated with
- lactation
- pregnancy
Common questions about nipple abscess ICD-10 codes
What is the ICD-10 code for nipple abscess?
- N61.1 — Abscess of the breast and nipple.
Is N61.1 billable?
- Yes. N61.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N61.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N61.1 as a principal diagnosis.
Is N61.1 a CC or MCC?
- No. N61.1 is neither a CC nor an MCC under MS-DRG v44.0.