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ICD-10 Z23 - Encounter for immunization
Chapter 21 Section Z20-Z29

Z23

ICD-10 Billable

Encounter for immunization

Code first: any routine childhood examination
Specifically for this code:
  • procedure codes are required to identify the types of immunizations given
From Chapter 21:
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

V05.9

ICD-9 Billable

Need for prophylactic vaccination and inoculation against unspecified single disease