Name Flags Card. Type Description & Constraints doco
. . Substance DomainResource A homogeneous material with a definite composition
. . . identifier Σ 0..* Identifier Unique identifier
. . . category Σ 0..* CodeableConcept What class/type of substance this is
Substance Category Codes ( Extensible)
. . . code Σ 1..1 CodeableConcept What substance this is
Substance Code ( Example)
. . . description Σ 0..1 string Textual description of the substance, comments
. . . instance Σ 0..* BackboneElement If this describes a specific package/container of the substance
. . . . identifier Σ 0..1 Identifier Identifier of the package/container
. . . . expiry Σ 0..1 dateTime When no longer valid to use
. . . . quantity Σ 0..1 SimpleQuantity Amount of substance in the package
. . . ingredient Σ 0..* BackboneElement Composition information about the substance
. . . . quantity Σ 0..1 Ratio Optional amount (concentration)
. . . . substance Σ 1..1 Reference( Substance) A component of the substance

doco Documentation for this format