[mewzilla]

Holy crap, from that last link...

Unvaccinated for COVID-19
Z28.3

Use additional code, if applicable, to identify:
immunization not carried out because of contraindication (Z28.0-)
immunization not carried out because of patient decision for other and unspecified reason (Z28.2-)
immunization not carried out because of patient decision for reasons of belief or group pressure (Z28.1)
immunization not carried out for other reason (Z28.8-)

Z28

Includes: vaccination not carried out

Code also: , if applicable, encounter for immunization safety counseling (Z71.85)

[mewzilla]

I wonder what happens to practicioners who refuse to ask...

And patients who refuse to answer those questions.

[markman46]

These icd10 z codes are nor used for payment just diagnostic purposes