NameFlagsCard.TypeDescription & Constraintsdoco
.. Substance DomainResourceA homogeneous material with a definite composition
... identifier Σ0..*IdentifierUnique identifier
... category Σ0..*CodeableConceptWhat class/type of substance this is
Substance Category Codes (Extensible)
... code Σ1..1CodeableConceptWhat substance this is
Substance Code (Example)
... description Σ0..1stringTextual description of the substance, comments
... instance Σ0..*BackboneElementIf this describes a specific package/container of the substance
.... identifier Σ0..1IdentifierIdentifier of the package/container
.... expiry Σ0..1dateTimeWhen no longer valid to use
.... quantity Σ0..1SimpleQuantityAmount of substance in the package
... ingredient Σ0..*BackboneElementComposition information about the substance
.... quantity Σ0..1RatioOptional amount (concentration)
.... substance Σ1..1Reference(Substance)A component of the substance

doco Documentation for this format