MCMedicalCodingSoftware
Free trial
Z28.310

Z28.310: Unvaccinated for COVID-19

Billable / specific codeICD-10-CMPOA exempt

Z28.310 is a billable, specific ICD-10-CM code for unvaccinated for covid-19. It is valid for submission on a claim.

Check Z28.310 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

  • COVID-19›unvaccinated(for)
  • Unimmunized›for COVID-19
  • Unvaccinated›for COVID-19
  • Underimmunization status›COVID-19›unvaccinated(for)
  • Status›underimmunization›COVID-19›unvaccinated(for)

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Z28.31

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.