Y66
ICD-10BillableNonadministration of surgical and medical care
Official ICD-10-CM descriptor (FY2026)
Nonadministration of surgical and medical care
Y66 is valid for submission on a claim: CMS flags it as a billable, specific code.
Inclusion terms
- Premature cessation of surgical and medical care
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- DNR status (Z66)
- palliative care (Z51.5)
Where this code sits
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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.