description: The weight of the mother before becoming pregnant. package_name: hl7.fhir.us.bfdr derivation: constraint name: ObservationMotherPrepregnancyWeight type: Observation elements: code: short: Body weight --pre current pregnancy pattern: type: CodeableConcept value: coding: - {code: 56077-1, 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 pregnancy report of Education, Mother's height, Mother's pre-pregnancy weight and Prenatal care visit number and also to reflect the relevant edit possibilities for pregnancy status of Female decedent. choices: [] index: 7 valueQuantity: {type: Quantity, short: Weight in lb, choiceOf: value, index: 4} value[x]: elements: value: {index: 8} code: short: pound pattern: {type: Code, value: '[lb_av]'} index: 9 required: [value] package_version: 2.0.0 class: profile kind: resource url: http://hl7.org/fhir/us/bfdr/StructureDefinition/Observation-mother-prepregnancy-weight base: http://hl7.org/fhir/us/core/StructureDefinition/us-core-vital-signs version: 2.0.0 required: [value, valueQuantity]