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 Head Occipital-frontal Circumference Observation

Page standards status: Informative

Previous Page - US Core Pediatric BMI for Age Observation

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

- 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 Head Occipital-frontal Circumference Observation Resource

US Core Pediatric Head Occipital-frontal Circumference Percentile example: https://hl7.org/fhir/us/core/Observation-ofc-percentile.html

Next Page - US Core Pediatric Weight for Height Observation