Current
Z28 — Immunization not carried out and underimmunization status
Part of Chapter 21: Factors influencing health status and contact with health services , block Persons with potential health hazards related to communicable diseases (Z20-Z29) .
Official Notes
Includes
vaccination not carried out
Code Also
, if applicable, encounter for immunization safety counseling ( Z71.85 )
Child Codes
- Z28.0 Immunization not carried out because of contraindication Has subcodes
- Z28.1 Immunization not carried out because of patient decision for reasons of belief or group pressure Billable
- Z28.2 Immunization not carried out because of patient decision for other and unspecified reason Has subcodes
- Z28.3 Underimmunization status Has subcodes
- Z28.8 Immunization not carried out for other reason Has subcodes
- Z28.9 Immunization not carried out for unspecified reason Billable
Referenced By
Official notes on these codes cite Z28.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS