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Y64.1

Y64.1: Contaminated medical or biological substance, injected or used for immunization

Billable / specific codeICD-10-CM

Y64.1 is a billable, specific ICD-10-CM code for contaminated medical or biological substance, injected or used for immunization. It is valid for submission on a claim.

Check Y64.1 with the rest of the claim: free scrubber

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Misadventure during surgical or medical care›contaminated medical or biological substance›administered NEC›immunization
  • Misadventure during surgical or medical care›contaminated medical or biological substance›administered NEC›injection
  • Misadventure during surgical or medical care›contaminated medical or biological substance›administered NEC›vaccination

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Y64

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.