N64.1
ICD-10BillableFat necrosis of breast
Official ICD-10-CM descriptor (FY2026)
Fat necrosis of breast
N64.1 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Fat necrosis (segmental) of breast
Code first
Sequence the underlying condition before this code.
- breast necrosis due to breast graft (T85.898)
Related codes in N64
Where this code sits
- Parent code
- N64
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.