Current

Z23 — Encounter for immunization

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

Code First

any routine childhood examination

Code Also

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

Note

procedure codes are required to identify the types of immunizations given

Child Codes

Z23 has no child codes in the FY 2027 release -- it is used on its own.

Referenced By

Official notes on these codes cite Z23.

FY 2027 effective October 1, 2026 · CDC NCHS and CMS