Z23
Encounter for immunization
Factors influencing health status and contact with health services Billable
Quick Reference
Vaccination administration as primary or sole reason for encounter
Clinical Information
When to Use This Code
Vaccination administration as primary or sole reason for encounter
Common Clinical Scenarios
- Flu shot administration
- COVID-19 vaccination
- Pneumococcal vaccine
- Shingles vaccine administration
- Tdap booster
Documentation Requirements
- Specify vaccine type and brand (use CVX codes)
- Document lot number and expiration date
- Record injection site and route
- Provide VIS (Vaccine Information Statement) and document patient acceptance
- Note any adverse reactions
Coding Guidelines
Inclusion Terms
These terms are included in this code:
VaccinationImmunizationProphylactic vaccine administration
Exclusion Terms
Do NOT use this code for:
- Need for immunization (Z28.-)
- Immunization not carried out (Z28.-)
Coding Notes
Use CPT 90471-90474 for vaccine administration
Use specific vaccine CPT codes (90630-90759) for product
Medicare Part B covers many vaccines without cost-sharing
Related ICD-10 Codes
Consider these related codes based on patient presentation:
Automate Your Coding
Let OrbDoc AI automatically suggest ICD-10 codes based on your clinical documentation.
Request Demo Learn MoreCode Details
Code
Z23
Category
Factors influencing health status and contact with health services
Billable Status
Billable
Need Coding Help?
Our medical coding specialists can help you navigate complex coding scenarios.
Contact UsStreamline Your Medical Documentation
OrbDoc AI automatically generates clinical documentation and suggests appropriate ICD-10 codes, saving you hours of administrative work.