description: The total number of prior cesarean deliveries for the mother. package_name: hl7.fhir.us.bfdr derivation: constraint name: ObservationNumberPreviousCesareans type: Observation elements: code: short: 'Previous cesarean deliveries #' pattern: type: CodeableConcept value: coding: - {code: 68497-7, system: 'http://loinc.org'} index: 0 subject: type: Reference refers: ['http://hl7.org/fhir/us/vr-common-library/StructureDefinition/Patient-mother-vr'] index: 1 value: extensions: {} elements: extension: elements: value: short: To reflect the relevant edit possibilities for number of previous cesareans. choices: [] index: 8 valueInteger: {type: integer, choiceOf: value, index: 4} value[x]: extensions: bypassEditFlag: {url: 'http://hl7.org/fhir/us/vr-common-library/StructureDefinition/BypassEditFlag', min: 0, max: 1, type: Extension, index: 6} elements: extension: index: 5 slicing: rules: open ordered: false discriminator: - {path: url, type: value} min: null slices: bypassEditFlag: match: {url: null} schema: {type: Extension, url: 'http://hl7.org/fhir/us/vr-common-library/StructureDefinition/BypassEditFlag', index: 6} min: 0 max: 1 package_version: 2.0.0 class: profile kind: resource url: http://hl7.org/fhir/us/bfdr/StructureDefinition/Observation-number-previous-cesareans base: http://hl7.org/fhir/StructureDefinition/Observation version: 2.0.0 required: [value, subject, valueInteger]