https://www.aafp.org/pubs/fpm/blogs/gettingpaid/entry/covid_immunization_codes.html#:~:text=310%2C%20%E2%80%9CUnvaccinated%20for%20COVID%2D,of%20any%20COVID%2D19%20vaccine.

New diagnosis codes for COVID-19 immunization status

The Centers for Disease Control and Prevention (CDC) and the Centers for Medicare & Medicaid Services have announced three new diagnosis codes, including two for COVID-19 immunization status. The following codes will be available as of April 1:

ICD-10-CM Description

Z28.310 Unvaccinated for COVID-19

Z28.311 Partially vaccinated for COVID-19

Z28.39 Other under-immunization status