extension shown: fhir [x]

Immunization.identifier

Defined in the fhir.schema.org extension.
Canonical URL: http://schema.org/Immunization.identifier

Thing > Property > Immunization.identifier

A unique identifier assigned to this immunization record.

Usage: Fewer than 10 domains
Values expected to be one of these types
Identifier
Used on these types
Immunization

Schema Version 2.2