| # | | Name | Source | Ver | Description |
| 1 | | Extension - Batch Storage Duration dx-PQ | hl7.fhir.uv.dx-pq#current | R5 | |
| 2 | | Observation Body Position | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | The position of the body when the observation was done, e.g. standing, sitting. To be used only when the body position in not precoordinated in the observation code. |
| 3 | | Procedure Approach Body Structure | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | The approach body site used for this procedure. Multiple locations are allowed. |
| 4 | | Specimen Additive | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | References a resource or provides a code or text that specifies a substance that is added to a laboratory specimen (part of the container device or added to the specimen indenpendently). |
| 5 | | Specimen Additive | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | References a resource or provides a code or text that specifies a substance that is added to a laboratory specimen (part of the container device or added to the specimen indenpendently). |
| 6 | | Specimen Collection Priority | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | The urgency of sample collection, such as STAT, ASAP, ASAP-ED, ROUTINE, ROUTINE-AM, etc…. |
| 7 | | Specimen Is Dry Weight | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | If the recorded quantity of the specimen is reported as a weight, if it is a dry weight. |
| 8 | | Specimen Processing Time | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Period or duration of processing. |
| 9 | | Specimen Sequence Number | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | An assigned number on the specimen denoting the order of collection. |
| 10 | | Specimen Special handling | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Special handling during the collection, transport, or storage of the specimen. |