ICD-10-CM › Z00-Z99 › Z20-Z29 › Z codes › Z28

Z28

Immunization not carried out and underimmunization status

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 6 more specific codes instead:

  • Z28.0 Immunization not carried out because of contraindication (also a header)
  • Z28.1 Immunization not carried out because of patient decision for reasons of belief or group pressure
  • Z28.2 Immunization not carried out because of patient decision for other and unspecified reason (also a header)
  • Z28.3 Underimmunization status (also a header)
  • Z28.8 Immunization not carried out for other reason (also a header)
  • Z28.9 Immunization not carried out for unspecified reason

What has happened to this code

Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2012 Added to the draft code set draft Immunization not carried out and underimmunization status

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

This code

Code also

  • , if applicable, encounter for immunization safety counseling (Z71.85)

Includes

  • vaccination not carried out