{description: 'Unit of Use [NDC code] (https://www2a.cdc.gov/vaccines/iis/iisstandards/ndc_crosswalk.asp) mapping  to the [CVX Vaccine codes](https://www2a.cdc.gov/vaccines/iis/iisstandards/vaccines.asp?rpt=cvx).  Note: source = NDC and target = CVX', package_name: hl7.fhir.us.core, name: US Core NDC to CVX Code Mapping, type: null, package_version: 1.0.0, class: unknown, kind: null, url: 'http://hl7.org/fhir/us/core/ConceptMap/ndc-cvx', version: 1.0.0}