description: Definition of the Observation for the Elston/Ellis grading system
package_name: ch.fhir.ig.ch-crl
derivation: constraint
name: CHCRLObservationElstonEllisGradingSystem
type: Observation
elements:
  code:
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: '4.35', system: 'http://fhir.ch/ig/ch-crl/CodeSystem/nkrs-variables', display: Elston/Ellis grading system}
    index: 0
  subject:
    type: Reference
    short: Patient
    refers: ['http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-patient']
    index: 1
    elements:
      reference: {index: 2}
    required: [reference]
  effective:
    choices: []
    index: 4
  effectiveDateTime: {type: dateTime, index: 5}
  performer:
    type: Reference
    short: Practitioner if resident physician or Organization Department if hospital
    refers: ['http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-organization-department', 'http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-practitioner']
    index: 6
    elements:
      reference: {index: 7}
    required: [reference]
  valueCodeableConcept:
    type: CodeableConcept
    short: The histopathological grade for breast cancer. It is also called the Nottingham Histological Score.
    binding: {strength: preferred, valueSet: 'http://fhir.ch/ig/ch-crl/ValueSet/nkrs-elstonellisgradingsystem'}
    constraint:
      nkrs-elstonellisgradingsystem: {human: At least one of the codings should come from the preferred NKRS value set, source: 'http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-observation-elstonellisgradingsystem', severity: warning, expression: 'coding.where(code.memberOf(''http://fhir.ch/ig/ch-crl/ValueSet/nkrs-elstonellisgradingsystem'')).exists()'}
    index: 8
    elements:
      coding:
        index: 9
        elements:
          system: {index: 10}
          code: {index: 11}
          display: {index: 12}
        required: [display, system, code]
    required: [coding]
  dataAbsentReason:
    short: The histopathological grade for breast cancer is not stated / not assessed
    index: 13
    elements:
      coding:
        index: 14
        elements:
          system:
            pattern: {type: Uri, value: 'http://terminology.hl7.org/CodeSystem/data-absent-reason'}
            index: 15
          code:
            pattern: {type: Code, value: unknown}
            index: 16
          display:
            pattern: {type: String, value: Unknown}
            index: 17
        required: [display, system, code]
    required: [coding]
package_version: 0.9.0
class: profile
kind: resource
url: http://fhir.ch/ig/ch-crl/StructureDefinition/ch-crl-observation-elstonellisgradingsystem
base: http://hl7.org/fhir/StructureDefinition/Observation
version: 0.9.0
required: [effectiveDateTime, subject, effective]