Encounter for immunization Z23

The ICD10 code for the diagnosis "Encounter for immunization" is "Z23". Z23 is a VALID/BILLABLE ICD10 code, i.e it is valid for submission for HIPAA-covered transactions.

  • Z23 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM Z23 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of Z23 - other international versions of ICD-10 Z23 may differ.
  • procedure codes are required to identify the types of immunizations given
Code First:
  • any routine childhood examination

Codes: = Billable

  • Z23 Encounter for immunization

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.