N61.21: Granulomatous mastitis, right breast
N61.21 is the billable ICD-10-CM diagnosis code for Granulomatous mastitis, right breast. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code N61.21?
N61.21 is the ICD-10-CM diagnosis code for Granulomatous mastitis, right breast. It belongs to category N61 (Inflammatory disorders of breast).
Is N61.21 a billable code?
Yes. N61.21 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does N61.21 belong to?
N61.21 is part of ICD-10-CM category N61 — Inflammatory disorders of breast, which has 12 billable codes.
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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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