AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2020 Issue 4; New/Revised ICD-10-CM Codes

Granulomatous Mastitis

New subcategory N61.2, Granulomatous mastitis, has been created with codes to identify whether this condition affects the right breast, left breast or bilateral breasts. The change will allow the differentiation of granulomatous mastitis from other types of mastitis currently identified by ICD-10-CM codes.Granulomatous mastitis is a rare, chronic, inflammatory condition of the breast affecting women of child-bearing age. The main symptoms include a palpable mass, skin or nipple retraction, and pain and swelling in the breast. The etiology is unknown and there is no universally accepted treatment to date, but antibiotics, corticosteroids, drainage, excision, and surgical removal...

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