IngredientItemCodingSystem public enum IngredientItemCodingSystem : String, EpaMedicationCodingSystem ask Declaration Swift case ask = "http://fhir.de/CodeSystem/ask" atcDe Declaration Swift case atcDe = "http://fhir.de/CodeSystem/bfarm/atc" snomed Declaration Swift case snomed = "http://snomed.info/sct"