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 Pediatric BMI for Age Observation

Page standards status: Informative

Previous Page - US Core Patient

The US Core 3.1.1 IG profiles the Observation resource for a variety of purposes. For example:

- ​Smoking status
- ​Pediatric BMI for Age
- ​Pediatric Weight for Height

US Core 6.1.0 defines those same profiles:

- Smoking status
- Pediatric BMI for Age
- Pediatric Weight for Height

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

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

Table Definition

#### An Example BMI Age Observation Resource

US Core Pediatric BMI for Age example: US Core 3.1.1 Pediatric BMI for Age](http://hl7.org/fhir/us/core/3.1.1/StructureDefinition-pediatric-bmi-for-age.html)

    {
      "resourceType" : "Observation",
      "id" : "pediatric-bmi-example",
      "meta" : {
        "profile" : [
          "http://hl7.org/fhir/us/core/StructureDefinition/pediatric-bmi-for-age"
        ]
      },
      "text" : {
        "status" : "generated",
        "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\">Generated Narrativeid: pediatric-bmi-examplemeta: category: <span title=\"Codes: {http://terminology.hl7.org/CodeSystem/observation-category vital-signs}\">Vital Signs</span>code: <span title=\"Codes: {http://loinc.org 59576-9}\">BMI</span>subject: <a href=\"Patient-child-example.html\">Child Example. Generated Summary: id: child-example; Medical Record Number: 1032704 (USUAL); active; Child Example ; ph: 555-555-5555(HOME); gender: male; birthDate: 2016-01-15</a>encounter: GP Visiteffective: 05/05/2019 5:12:29 AMvalue: 65 %note: CDC Males, 2-20 years Chart</div>"
      },
      "status" : "final",
      "category" : [
        {
          "coding" : [
            {
              "system" : "http://terminology.hl7.org/CodeSystem/observation-category",
              "code" : "vital-signs",
              "display" : "Vital Signs"
            }
          ],
          "text" : "Vital Signs"
        }
      ],
      "code" : {
        "coding" : [
          {
            "system" : "http://loinc.org",
            "code" : "59576-9",
            "display" : "Body mass index (BMI) [Percentile] Per age and sex"
          }
        ],
        "text" : "BMI"
      },
      "subject" : {
        "reference" : "Patient/child-example",
        "display" : "Child Example"
      },
      "encounter" : {
        "display" : "GP Visit"
      },
      "effectiveDateTime" : "2019-05-04T12:12:29-07:00",
      "valueQuantity" : {
        "value" : 65,
        "unit" : "%",
        "system" : "http://unitsofmeasure.org",
        "code" : "%"
      },
      "note" : [
        {
          "text" : "CDC Males, 2-20 years Chart"
        }
      ]
    }

Next Page - US Core Pediatric Head Occipital-frontal Circumference Observation