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Z23 - Encounter for immunization


The ICD 10 Code for Encounter for immunization is listed as Z23.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: Z23
Description: Encounter for immunization
  • Code first any routine childhood examination
  • Note: Procedure codes are required to identify the types of immunizations given.
Diagnostic Related Groups
(MS-DRG v30.0)
795 - Normal Newborn
951 - Other Factors Influencing Health Status
Chapter Factors influencing health status and contact with health services (Z00-Z99)
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: V05.9 - Need for prophylactic vaccination and inoculation against unspecified single disease (approximate)