Z23 Encounter for immunization
ICD-10-CM category Z23 sits in Chapter 21 (Factors influencing health status and contact with health services, Z00-Z99). It contains 1 billable code for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
The category code
Z23 itself is billable for FY2027: no more specific code exists under it.Billable codes in Z23
| Code | Description |
|---|---|
Z23 | Encounter for immunization |
Search within ICD-10-CM for Z23 and related codes
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