Birth And Fetal Death (BFDR) FHIR Implementation Guide
2.0.0 - STU2  flag

Birth And Fetal Death (BFDR) FHIR Implementation Guide, published by HL7 International / Public Health. This guide is not an authorized publication; it is the continuous build for version 2.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-bfdr/ and changes regularly. See the Directory of published versions

Resource Profile: Observation - Mother Prepregnancy Weight

Official URL: http://hl7.org/fhir/us/bfdr/StructureDefinition/Observation-mother-prepregnancy-weight Version: 2.0.0
Active as of 2025-02-19 Computable Name: ObservationMotherPrepregnancyWeight
Other Identifiers: OID:2.16.840.1.113883.4.642.40.13.42.58

The weight of the mother before becoming pregnant.

The edit flag extension supports validation as part of the Jurisdiction to NCHS use case and can be ingnored for the provider to jurisdiction use case. The validation checks are done at the jurisdiction prior to sending to the National Statistical Agency and are based on the item specific edit criteria specified in the Birth Edit Specifications for the 2003 Proposed Revision of the U.S. Standard Certificate of Birth and the Fetal Death Edit Specifications for the 2003 Revision of the U.S. Standard Report of Fetal Death.

IJE Mapping

Natality
Use Case # Description IJE Name Field Type Value Set/Comments
Natality 137 Mother's Prepregnancy Weight (in whole pounds) PWGT value quantity
Natality 138 Mother's Prepregnancy Weight--Edit Flag PWGT_BYPASS value.extension[bypassEditFlag].value codeable PregnancyReportEditFlagsVS,
See Handling of edit flags

Fetal Death
Use Case # Description IJE Name Field Type Value Set/Comments
Fetal Death 91 Mother's Prepregnancy Weight PWGT value quantity
Fetal Death 92 Mother's Prepregnancy Weight--Edit Flag PWGT_BYPASS value.extension[bypassEditFlag].value codeable PregnancyReportEditFlagsVS,
See Handling of edit flags

Form Mapping

Form Mapping
Item # Form Field FHIR Profile Field Reference
32 Mother’s Prepregnancy Weight value Certificate of Live Birth
14 What was your prepregnancy weight, that is, your weight immediately before you became pregnant with this child? value Mothers Worksheet for Child’s Birth Certificate
26 Mother’s Prepregnancy Weight value Report of Fetal Death
16 What was your prepregnancy weight? value Patient’s Worksheet for the Report of Fetal Death

Usage:

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation C 0..* USCoreVitalSignsProfile US Core Vital Signs Profile
dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label
dom-6: A resource should have narrative for robust management
obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present
obs-7: If Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present
vs-2: If there is no component or hasMember element then either a value[x] or a data absent reason must be present.
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
ele-1: All FHIR elements must have a @value or children
... modifierExtension ?! 0..* Extension Extensions that cannot be ignored
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
... status ?!SΣ 1..1 code registered | preliminary | final | amended +
Binding: ObservationStatus (required)
ele-1: All FHIR elements must have a @value or children
.... category:VSCat S 1..1 CodeableConcept Classification of type of observation
Binding: ObservationCategoryCodes (preferred): Codes for high level observation categories.


ele-1: All FHIR elements must have a @value or children
..... coding SΣ 1..* Coding Code defined by a terminology system
ele-1: All FHIR elements must have a @value or children
...... system SΣ 1..1 uri Identity of the terminology system
ele-1: All FHIR elements must have a @value or children
Fixed Value: http://terminology.hl7.org/CodeSystem/observation-category
...... code SΣ 1..1 code Symbol in syntax defined by the system
ele-1: All FHIR elements must have a @value or children
Fixed Value: vital-signs
... code SΣ 1..1 CodeableConcept Body weight --pre current pregnancy
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.


ele-1: All FHIR elements must have a @value or children
Required Pattern: At least the following
.... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
..... system 1..1 uri Identity of the terminology system
Fixed Value: http://loinc.org
..... code 1..1 code Symbol in syntax defined by the system
Fixed Value: 56077-1
... subject SΣ 1..1 Reference(Patient - Mother Vital Records) Who and/or what the observation is about
ele-1: All FHIR elements must have a @value or children
... effective[x] SΣC 1..1 Often just a dateTime for Vital Signs
ele-1: All FHIR elements must have a @value or children
vs-1: if Observation.effective[x] is dateTime and has a value then that value shall be precise to the day
.... effectiveDateTime dateTime
... value[x] SΣC 1..1 Quantity Weight in lb
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.


ele-1: All FHIR elements must have a @value or children
.... Slices for extension Content/Rules for all slices
..... bypassEditFlag 0..1 (Complex) BypassEditFlag Vital Records
URL: http://hl7.org/fhir/us/vr-common-library/StructureDefinition/BypassEditFlag
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
...... extension 0..0
...... url 1..1 uri "http://hl7.org/fhir/us/vr-common-library/StructureDefinition/BypassEditFlag"
...... value[x] 1..1 CodeableConcept 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.
Binding: Pregnancy Report Edit Flags (NCHS) (required): Pregnancy Report Edit Flags (NCHS)


ele-1: All FHIR elements must have a @value or children
.... value Σ 1..1 decimal Numerical value (with implicit precision)
ele-1: All FHIR elements must have a @value or children
.... comparator ?!Σ 0..1 code < | <= | >= | > - how to understand the value
Binding: QuantityComparator (required): How the Quantity should be understood and represented.


ele-1: All FHIR elements must have a @value or children
.... code Σ 0..1 code pound
ele-1: All FHIR elements must have a @value or children
Fixed Value: [lb_av]
... dataAbsentReason SC 0..1 CodeableConcept Why the result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.


ele-1: All FHIR elements must have a @value or children
... component SΣC 0..* BackboneElement Component observations
ele-1: All FHIR elements must have a @value or children
vs-3: If there is no a value a data absent reason must be present
.... modifierExtension ?!Σ 0..* Extension Extensions that cannot be ignored even if unrecognized
ele-1: All FHIR elements must have a @value or children
ext-1: Must have either extensions or value[x], not both
.... code SΣ 1..1 CodeableConcept Type of component observation (code / type)
Binding: US Core Vital Signs ValueSet (extensible): The vital sign codes from the base FHIR and US Core Vital Signs.


ele-1: All FHIR elements must have a @value or children
.... value[x] SΣC 0..1 Vital Sign Component Value
Binding: VitalSignsUnits (extensible): Common UCUM units for recording Vital Signs.


ele-1: All FHIR elements must have a @value or children
..... valueQuantity Quantity
.... dataAbsentReason SC 0..1 CodeableConcept Why the component result is missing
Binding: DataAbsentReason (extensible): Codes specifying why the result (Observation.value[x]) is missing.


ele-1: All FHIR elements must have a @value or children

doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / CodeURI
Observation.statusrequiredObservationStatus
http://hl7.org/fhir/ValueSet/observation-status|4.0.1
from the FHIR Standard
Observation.categorypreferredObservationCategoryCodes
http://hl7.org/fhir/ValueSet/observation-category
from the FHIR Standard
Observation.category:VSCatpreferredObservationCategoryCodes
http://hl7.org/fhir/ValueSet/observation-category
from the FHIR Standard
Observation.codeextensiblePattern: LOINC Code 56077-1
http://hl7.org/fhir/us/core/ValueSet/us-core-vital-signs
Observation.value[x]extensibleVitalSignsUnits
http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1
from the FHIR Standard
Observation.value[x].extension:bypassEditFlag.value[x]requiredPregnancyReportEditFlagsVS
http://hl7.org/fhir/us/bfdr/ValueSet/ValueSet-pregnancy-report-edit-flags
from this IG
Observation.value[x].comparatorrequiredQuantityComparator
http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1
from the FHIR Standard
Observation.dataAbsentReasonextensibleDataAbsentReason
http://hl7.org/fhir/ValueSet/data-absent-reason
from the FHIR Standard
Observation.component.codeextensibleUsCoreVitalSigns
http://hl7.org/fhir/us/core/ValueSet/us-core-vital-signs
Observation.component.value[x]extensibleVitalSignsUnits
http://hl7.org/fhir/ValueSet/ucum-vitals-common|4.0.1
from the FHIR Standard
Observation.component.dataAbsentReasonextensibleDataAbsentReason
http://hl7.org/fhir/ValueSet/data-absent-reason
from the FHIR Standard

 

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