WHO Antenatal Care Guideline Implementation Guide
0.3.0 - CI Build International flag

WHO Antenatal Care Guideline Implementation Guide, published by World Health Organization (WHO). This guide is not an authorized publication; it is the continuous build for version 0.3.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/costateixeira/smart-anc/ and changes regularly. See the Directory of published versions

Library: ANC.DT.07 Ultrasound recommendation

Official URL: http://smart.who.int/anc/Library/ANCDT07 Version: 0.3.0
Active as of 2025-08-16 Computable Name: ANCDT07
Other Identifiers: ANC.DT.07 (use: official, )

An ultrasound is recommended for all pregnant women before 24 weeks of gestation (early ultrasound). If there's no ultrasound available at that health-carte facility, the woman should be referred to another facility in which she can receive an ultrasound.

Title: ANC.DT.07 Ultrasound recommendation
Id: ANCDT07
Version: 0.3.0
Url: ANC.DT.07 Ultrasound recommendation
Official

ANC.DT.07

Type:

system: http://terminology.hl7.org/CodeSystem/library-type

code: logic-library

Date: 2025-08-16 08:48:39+0000
Publisher: World Health Organization (WHO)
Description:

An ultrasound is recommended for all pregnant women before 24 weeks of gestation (early ultrasound). If there's no ultrasound available at that health-carte facility, the woman should be referred to another facility in which she can receive an ultrasound.
Jurisdiction: 001
Related Artifacts:

Dependencies
Parameters:
NameTypeMinMaxIn/Out
PatientPatient01Out
Should Conduct ultrasound at the health-care facility or the referral facilityboolean01Out
Should Conduct ultrasound at the health-care facility or the referral facility optional if deemed necessary by the health workerboolean01Out
Should Conduct ultrasound scanboolean01Out
Should Refer to a facility with ultrasound equipmentboolean01Out
Should Ultrasound scan is optionalboolean01Out
Should Ultrasound scan is optional 2boolean01Out
Data Requirements:
TypeProfileMSCode Filter
Patient http://hl7.org/fhir/StructureDefinition/Patient
Content: text/cql
library ANCDT07

using FHIR version '4.0.1'

include FHIRHelpers version '4.0.1'

include ANCConfig called Config
include ANCConcepts called Cx
include ANCDataElements called PatientData
include ANCContactDataElements called ContactData

context Patient

/*
"Gestational age" < 24 weeks
*/
define "Should Conduct ultrasound at the health-care facility or the referral facility":
  ContactData."Gestational age" < 24 'weeks'

/*
"Gestational age" ≥ 24 weeks
*/
define "Should Conduct ultrasound at the health-care facility or the referral facility optional if deemed necessary by the health worker":
  ContactData."Gestational age" >= 24 'weeks'

/*
("Ultrasound scan conducted" = FALSE)
  AND ("Ultrasound available at the health-care facility" = TRUE)
  AND ("Gestational age" < 24 weeks)
*/
define "Should Conduct ultrasound scan":
  ContactData."Ultrasound done" is false
    and Config."Ultrasound available at the health-care facility" = true
    and ContactData."Gestational age" < 24 'weeks'

/*
("Ultrasound scan conducted" = FALSE)
  AND ("Ultrasound available at the health-care facility" = FALSE)
  AND ("Gestational age" < 24 weeks)
*/
define "Should Refer to a facility with ultrasound equipment":
  ContactData."Ultrasound done" is false
    and not Config."Ultrasound available at the health-care facility" = false
    and ContactData."Gestational age" < 24 'weeks'

/*
("Ultrasound scan conducted" = FALSE)
  AND ("Ultrasound available at the health-care facility" = TRUE)
  AND ("Gestational age" ≥ 24 weeks)
*/
define "Should Ultrasound scan is optional":
  ContactData."Ultrasound done" is false
    and Config."Ultrasound available at the health-care facility" = true
    and ContactData."Gestational age" >= 24 'weeks'

/*
("Ultrasound scan conducted" = FALSE)
  AND ("Ultrasound available at the health-care facility" = FALSE)
  AND ("Gestational age" ≥ 24 weeks)
*/
define "Should Ultrasound scan is optional 2":
  ContactData."Ultrasound done" is false
    and not Config."Ultrasound available at the health-care facility" = false
    and ContactData."Gestational age" >= 24 'weeks'
Content: application/elm+json
Encoded data (53544 characters)