description: Renal function can be determined by laboratory measurement of serum creatinine, from which the estimated glomerular filtration rate (eGFR) can be calculated.
package_name: ch.fhir.ig.ch-lab-report
derivation: constraint
name: ChLabObservation_eGFR
type: Observation
elements:
  category:
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: 18719-5, system: 'http://loinc.org', display: Chemistry studies (set)}
    index: 0
    slicing:
      slices:
        studyType:
          match: {}
          schema:
            pattern:
              type: CodeableConcept
              value:
                coding:
                - {code: 18719-5, system: 'http://loinc.org', display: Chemistry studies (set)}
            index: 0
        specialty:
          match: {}
          schema:
            pattern:
              type: CodeableConcept
              value:
                coding:
                - {code: '394596001', system: 'http://snomed.info/sct', display: Chemical pathology}
            index: 1
  method:
    pattern:
      type: CodeableConcept
      value:
        coding:
        - {code: '703505007', system: 'http://snomed.info/sct', display: Clearance calculation relative to 1.73 square meters body surface area (qualifier value)}
    index: 2
package_version: 1.0.0-ballot
class: profile
kind: resource
url: http://fhir.ch/ig/ch-lab-report/StructureDefinition/ch-lab-observation-egfr
base: http://fhir.ch/ig/ch-lab-report/StructureDefinition/ChLab-observation-single-test
version: 1.0.0-ballot