N61: Inflammatory disorders of breast
Codes under N61 (Inflammatory disorders of breast). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| N61.0 | Mastitis without abscess | ✓ |
| N61.0 | Mastitis without abscess | ✓ |
| N61.1 | Abscess of the breast and nipple | ✓ |
| N61.1 | Abscess of the breast and nipple | ✓ |
| N61.2 | Granulomatous mastitis | — |
| N61.2 | Granulomatous mastitis | — |
| N61.20 | Granulomatous mastitis, unspecified breast | ✓ |
| N61.20 | Granulomatous mastitis, unspecified breast | ✓ |
| N61.21 | Granulomatous mastitis, right breast | ✓ |
| N61.21 | Granulomatous mastitis, right breast | ✓ |
| N61.22 | Granulomatous mastitis, left breast | ✓ |
| N61.22 | Granulomatous mastitis, left breast | ✓ |
| N61.23 | Granulomatous mastitis, bilateral breast | ✓ |
| N61.23 | Granulomatous mastitis, bilateral breast | ✓ |
Frequently asked questions
What is ICD-10-CM code N61?
N61 is an ICD-10-CM category covering Inflammatory disorders of breast. It contains 14 more specific diagnosis codes, 12 of which are billable.
Is N61 a billable code?
No — N61 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example N61.0 — Mastitis without abscess). 12 of the 14 codes under N61 are billable.
What codes fall under N61?
N61 includes N61.0, N61.0, N61.1, N61.1, N61.2, plus 9 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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