Athena Core Implementation Guide
4.2.0 - release

Athena Core Implementation Guide - Local Development build (v4.2.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

Extension: athenahealth Estimated Gestational Age

Official URL: https://fhir.athena.io/StructureDefinition/ah-estimated-gestational-age Version: 4.2.0
Active as of 2025-04-17 Computable Name: AthenahealthEstimatedGestationalAge

An Extension to Observation resource for the estimated gestational age (EGA) of a pregnancy.

Athena Observations of pregnancy status can optionally supply the EGA of the pregnancy. The value is a quantity in format weeks.days, with days running from 0-6.

Context of Use

This extension may be used on the following element(s):

  • Element ID Observation

Usage info

Usage:

Formal Views of Extension Content

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

This structure is derived from Extension

Summary

Simple Extension of type Quantity: An Extension to Observation resource for the estimated gestational age (EGA) of a pregnancy.

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..* Extension athenahealth Estimated Gestational Age
... extension 0..0
... url 1..1 uri "https://fhir.athena.io/StructureDefinition/ah-estimated-gestational-age"
... value[x] 1..1 Quantity Estimated gestational age (EGA) of a pregnancy
.... value 1..1 decimal Numerical value (with implicit precision)
.... comparator 0..0
.... unit 1..1 string Unit representation
Required Pattern: weeks.days
.... system 0..0
.... code 0..0

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..* Extension athenahealth Estimated Gestational Age
... id 0..1 string Unique id for inter-element referencing
... extension 0..0
... url 1..1 uri "https://fhir.athena.io/StructureDefinition/ah-estimated-gestational-age"
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... value Σ 1..1 decimal Numerical value (with implicit precision)
.... unit Σ 1..1 string Unit representation
Required Pattern: weeks.days

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension of type Quantity: An Extension to Observation resource for the estimated gestational age (EGA) of a pregnancy.

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..* Extension athenahealth Estimated Gestational Age
... extension 0..0
... url 1..1 uri "https://fhir.athena.io/StructureDefinition/ah-estimated-gestational-age"
... value[x] 1..1 Quantity Estimated gestational age (EGA) of a pregnancy
.... value 1..1 decimal Numerical value (with implicit precision)
.... comparator 0..0
.... unit 1..1 string Unit representation
Required Pattern: weeks.days
.... system 0..0
.... code 0..0

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..* Extension athenahealth Estimated Gestational Age
... id 0..1 string Unique id for inter-element referencing
... extension 0..0
... url 1..1 uri "https://fhir.athena.io/StructureDefinition/ah-estimated-gestational-age"
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... value Σ 1..1 decimal Numerical value (with implicit precision)
.... unit Σ 1..1 string Unit representation
Required Pattern: weeks.days

doco Documentation for this format

 

​Other representations of profile: CSV, Excel, Schematron