| Extension | | 0..* |
| Extension.id | string | 0..1 |
| Extension.extension | Extension | 0..* |
| Extension.url | uri | 1..1 |
| Extension.value[x]:valueCodeableConcept | CodeableConcept | 1..1 |
| Extension.value[x]:valueCodeableConcept.id | string | 0..1 |
| Extension.value[x]:valueCodeableConcept.extension | Extension | 0..* |
| Extension.value[x]:valueCodeableConcept.coding | Coding | 0..* |
| Extension.value[x]:valueCodeableConcept.coding.id | string | 0..1 |
| Extension.value[x]:valueCodeableConcept.coding.extension | Extension | 0..* |
| Extension.value[x]:valueCodeableConcept.coding.system | uri | 1..1 |
| Extension.value[x]:valueCodeableConcept.coding.version | string | 0..1 |
| Extension.value[x]:valueCodeableConcept.coding.code | code | 1..1 |
| Extension.value[x]:valueCodeableConcept.coding.display | string | 1..1 |
| Extension.value[x]:valueCodeableConcept.coding.userSelected | boolean | 0..1 |
| Extension.value[x]:valueCodeableConcept.text | string | 0..1 |
