Da Vinci Payer Data Exchange
2.1.1 - STU 2.1

Da Vinci Payer Data Exchange, published by HL7 International / Financial Management. This guide is not an authorized publication; it is the continuous build for version 2.1.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/davinci-epdx/ and changes regularly. See the Directory of published versions

## US Core Laboratory Result Observation

Page standards status: Informative

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The US Core Laboratory Result Observation profile sets minimum expectations for the Observation resource to record, search, and fetch laboratory test results associated with a patient/member. It identifies which core elements, extensions, vocabularies and value sets SHALL be present in the resource when using this profile.

In US Core 6.1.0 a number of new Observation profiles were created. Many of them replaced the Vital Signs profiles from the base FHIR R4 base specification. The full list of US Core 6.1.0 Observation profiles in can be found here:

- US Core Observation Clinical Result Profile
- US Core Laboratory Result Observation Profile
- US Core Observation Occupation Profile
- US Core Observation Pregnancy Intent Profile
- US Core Observation Pregnancy Status Profile
- US Core Observation Screening Assessment Profile
- US Core Observation Sexual Orientation Profile
- US Core Simple Observation Profile
- US Core Smoking Status Observation Profile
- US Core Vital Signs Profile
  - US Core Pediatric Head Occipital Frontal Circumference Percentile Profile
  - US Core Pediatric BMI for Age Observation Profile
  - US Core Pediatric Weight for Height
  - US Core Blood Pressure Profile
  - US Core BMI Profile
  - US Core Body Height Profile
  - US Core Body Temperature Profile
  - US Core Body Weight Profile
  - US Core Head Circumference Profile
  - US Core Heart Rate Profile
  - US Core Pulse Oximetry Profile
  - US Core Respiratory Rate Profile

The essential fields (Must Support or Cardinality greater than 0..*) to be provided in the US Core 3.1.1 LaboratoryResultObservation or US Core 6.1.0 LaboratoryResultObservation resource are:

R4 Element | Name | Cardinality | Type
--- | --- | --- | ---
Observation.status | status | 1..1 | code
Observation.category | category | 1..* | (Slice Definition)
Observation.category:Laboratory | category:Laboratory | 1..1 | CodeableConcept
Observation.category:Laboratory.coding | Laboratory.coding | 1..* | Coding
Observation.category:Laboratory.system | Laboratory.system | 1..1 | uri
Observation.category:Laboratory.code | Laboratory.code | 1..1 | code
Observation.code | code | 1..1 | CodeableConcept
Observation.subject | subject | 1..1 | Reference(US Core Patient Profile)
Observation.effective[x] | effective[x] | 0..1 |
Observation.value[x] | value[x] | 0..1 |
Observation.dataAbsentReason | dataAbsentReason | 0..1 | CodeableConcept

Table Definition

### Example Laboratory Results Profile

Link to urine specific gravity laboratory result: https://hl7.org/fhir/us/core/Observation-usg.html

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