| Extension | | 0..* |
| Extension.id | string | 0..1 |
| Extension.extension | Extension | 0..* |
| Extension.extension:paired | Extension | 0..1 |
| Extension.extension:paired.id | string | 0..1 |
| Extension.extension:paired.extension | Extension | 0..* |
| Extension.extension:paired.url | uri | 1..1 |
| Extension.extension:paired.value[x]:valueBoolean | boolean | 0..1 |
| Extension.extension:connected | Extension | 0..1 |
| Extension.extension:connected.id | string | 0..1 |
| Extension.extension:connected.extension | Extension | 0..* |
| Extension.extension:connected.url | uri | 1..1 |
| Extension.extension:connected.value[x]:valueBoolean | boolean | 0..1 |
| Extension.extension:pairingDate | Extension | 0..1 |
| Extension.extension:pairingDate.id | string | 0..1 |
| Extension.extension:pairingDate.extension | Extension | 0..* |
| Extension.extension:pairingDate.url | uri | 1..1 |
| Extension.extension:pairingDate.value[x]:valueDateTime | dateTime | 0..1 |
| Extension.url | uri | 1..1 |
| Extension.value[x] | Address | Age | Annotation | Attachment | base64Binary | boolean | code | CodeableConcept | Coding | ContactPoint | Count | date | dateTime | decimal | Distance | Duration | HumanName | id | Identifier | instant | integer | markdown | Meta | Money | oid | Period | positiveInt | Quantity | Range | Ratio | Reference | SampledData | Signature | string | time | Timing | unsignedInt | uri | 0..0 |
