Z23
BillableEncounter for immunization
Z23 is the ICD-10-CM code for Encounter for immunization. It is a billable, specific code valid for reimbursement.
- Status
- Billable
- Chapter
- Z00-Z99
- Edition
- FY2026
Z00-Z99 Factors influencing health status and contact with health services
Code first
- •any routine childhood examination
Notes
- •procedure codes are required to identify the types of immunizations given
- •, if applicable, encounter for immunization safety counseling (Z71.85)
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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