description: This profile constrains the Observation resource to represent the gestational weight gain.
package_name: rs/ch.fhir.ig.ch
derivation: constraint
name: ChEpregObservationWeightGain
type: Observation
elements:
  value[x]:
    elements:
      value: {index: 10}
      unit: {index: 11}
      system:
        pattern: {type: uri, value: 'http://unitsofmeasure.org'}
        type: uri
        index: 12
      code:
        pattern: {type: code, value: kg}
        type: code
        index: 13
    required: [code, system, unit, value]
  derivedFrom:
    type: Reference
    short: Body weight measurement (e.g., at the beginning of pregnancy, current measurement) from which this gestational weight gain is derived
    refers: ['http://fhir.ch/ig/ch-epreg/StructureDefinition/ch-epreg-observation-body-weight']
    index: 14
    elements:
      reference: {index: 15}
    required: [reference]
  encounter:
    type: Reference
    refers: ['http://fhir.ch/ig/ch-epreg/StructureDefinition/ch-epreg-encounter-mother']
    index: 2
  valueQuantity: {type: Quantity, choiceOf: value, index: 9}
  value:
    choices: [valueQuantity]
    index: 8
  effectiveDateTime: {type: dateTime, choiceOf: effective, index: 5}
  effective:
    choices: [effectiveDateTime]
    index: 4
  code:
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: '816161008', system: 'http://snomed.info/sct'}
    type: CodeableConcept
    index: 0
  subject:
    type: Reference
    refers: ['http://fhir.ch/ig/ch-epreg/StructureDefinition/ch-epreg-patient-mother']
    index: 1
  performer: {index: 6}
package_version: epreg-1.0.0-ballot
class: profile
kind: resource
url: http://fhir.ch/ig/ch-epreg/StructureDefinition/ch-epreg-observation-weight-gain
base: http://fhir.ch/ig/ch-epreg/StructureDefinition/ch-epreg-observation-preg-progress
version: 1.0.0-ballot
required: [value, valueQuantity]