| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  Substance | TU | DomainResource | A homogeneous material with a definite composition Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension | |
  identifier | Σ | 0..* | Identifier | Unique identifier |
 instance | ?!Σ | 1..1 | boolean | Is this an instance of a substance or a kind of one |
| status | ?!Σ | 0..1 | code | active | inactive | entered-in-error Binding: FHIRSubstanceStatus (Required) |
| category | Σ | 0..* | CodeableConcept | What class/type of substance this is Binding: Substance Category Codes (Extensible) |
 code | Σ | 1..1 | CodeableReference(SubstanceDefinition) | What substance this is Binding: Substance Code (Example) |
| description | Σ | 0..1 | markdown | Textual description of the substance, comments |
| expiry | Σ | 0..1 | dateTime | When no longer valid to use |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[x] | Σ | 1..1 | A component of the substance Binding: Substance Code (Example) | |
| substanceCodeableConcept | CodeableConcept | |||
| substanceReference | Reference(Substance) | |||
| Documentation for this format | ||||