Namespace Registry
This page lists all FHIR namespaces used across Synapxe FHIR projects, organised by programme or data object. SGCDI data objects correspond to those in Summary.
All Synapxe-defined namespaces use the URL pattern https://fhir.synapxe.sg/NamingSystem/<shortname>.
Legacy format: Older projects (ASG, Healthier-SG, CCDA) use http://ihis.sg/identifier/<shortname> instead. These are listed in the Legacy (ihis.sg) sections at the bottom of this page.
Shared Identifiers
These namespaces appear across multiple data objects. Full context is given in the data object sections below.
| Namespace |
Description |
nric |
Singapore NRIC or FIN number |
mrn |
Institution-assigned Medical Record Number |
mcr |
Singapore Medical Council Registration number |
snb |
Singapore Nursing Board registration number |
prn |
Provider Registration Number |
dcr |
Singapore Dental Council Registration number |
hci-code |
MOH-assigned Healthcare Institution (HCI) code |
hcsa-code |
HCSA licence code |
uen |
Singapore Unique Entity Number (Accounting and Corporate Regulatory Authority) |
record-id |
System-assigned record identifier (recordIdentifier slice) |
accession-no |
Document or report accession number |
sequence-no |
Sequence number within a group |
event-id |
Encounter event identifier |
msg-id |
Message identifier (carried via ext-artifact on Meta.tag) |
msg-sequence-id |
Message sequence identifier (carried via ext-artifact on Meta.tag) |
Patient
| Namespace |
Applied To |
Description |
nric |
Patient.identifier |
Singapore NRIC or FIN number |
mrn |
Patient.identifier |
Institution-assigned Medical Record Number |
Clinician
| Namespace |
Applied To |
Description |
mcr |
PractitionerRole.identifier |
Singapore Medical Council Registration number |
snb |
PractitionerRole.identifier |
Singapore Nursing Board registration number |
prn |
PractitionerRole.identifier |
Provider Registration Number |
dcr |
PractitionerRole.identifier |
Singapore Dental Council Registration number |
Institution
| Namespace |
Applied To |
Description |
hci-code |
Organization.identifier |
MOH-assigned Healthcare Institution (HCI) code |
hcsa-code |
Organization.identifier |
HCSA licence code |
uen |
Organization.identifier |
Singapore Unique Entity Number |
HealthcareService
| Namespace |
Applied To |
Description |
hcsa-code |
HealthcareService.identifier |
HCSA licence code |
Care Team
| Namespace |
Applied To |
Description |
enrolment-id |
CareTeam.identifier |
Health programme enrolment identifier |
Appointment
| Namespace |
Applied To |
Description |
record-id |
Appointment.identifier (recordIdentifier) |
System-assigned record identifier |
appointment-id |
Appointment.identifier |
Appointment identifier |
group-no |
Appointment.identifier |
Appointment group number |
Event/Visit
| Namespace |
Applied To |
Description |
record-id |
Encounter.identifier (recordIdentifier) |
System-assigned record identifier |
case-id |
Encounter.identifier |
Case identifier |
movement-id |
Encounter.identifier |
Patient movement identifier |
Vital Signs / Clinical Assessment / Social History
| Namespace |
Applied To |
Description |
investigation-id |
Observation.identifier |
Investigation identifier |
Lab Order / Radiology Order
| Namespace |
Applied To |
Description |
order-no |
ServiceRequest.identifier |
Lab or radiology order number |
Lab Result
| Namespace |
Applied To |
Description |
record-id |
DiagnosticReport.identifier (recordIdentifier) |
System-assigned record identifier |
accession-no |
DiagnosticReport.identifier |
Accession number |
order-no |
ServiceRequest.identifier |
Investigation order number |
investigation-id |
Observation.identifier |
Investigation identifier |
mcr |
DiagnosticReport.resultsInterpreter |
Reporting clinician MCR number |
Radiology Report
| Namespace |
Applied To |
Description |
record-id |
Composition.identifier (recordIdentifier) |
System-assigned record identifier |
accession-no |
Composition.identifier |
Accession number |
mcr |
Composition.author |
Reporting clinician MCR number |
Cardiology Report
| Namespace |
Applied To |
Description |
record-id |
Composition.identifier (recordIdentifier) |
System-assigned record identifier |
accession-no |
Composition.identifier |
Accession number |
sequence-no |
DiagnosticReport.identifier, Procedure.identifier, Observation.identifier |
Sequence number within the report |
investigation-id |
Observation.identifier |
Investigation identifier |
event-id |
Procedure.identifier |
Encounter event reference |
mcr |
DiagnosticReport.resultsInterpreter |
Reporting clinician MCR number |
Ordered Medications
| Namespace |
Applied To |
Description |
record-id |
MedicationRequest.identifier (recordIdentifier) |
System-assigned record identifier |
order-no |
MedicationRequest.identifier |
Order number |
source-grouping-id |
MedicationRequest.identifier |
Source grouping identifier |
sequence-no |
MedicationRequest.identifier |
Sequence number |
group-no |
MedicationRequest.identifier |
Medication group number |
mcr |
MedicationRequest.requester |
Prescribing clinician MCR number |
snb |
MedicationRequest.requester |
Prescribing clinician SNB number |
prn |
MedicationRequest.requester |
Prescribing clinician PRN |
dcr |
MedicationRequest.requester |
Prescribing clinician DCR number |
Dispensed Medications
| Namespace |
Applied To |
Description |
record-id |
MedicationDispense.identifier (recordIdentifier), MedicationRequest.identifier (contained) |
System-assigned record identifier |
dispense-id |
MedicationDispense.identifier |
Dispense identifier |
source-grouping-id |
MedicationDispense.identifier |
Source grouping identifier |
order-no |
MedicationDispense.identifier |
Originating order number |
order-id |
MedicationRequest.identifier (contained) |
Contained order identifier |
group-no |
MedicationRequest.identifier (contained) |
Medication group number |
prn |
MedicationDispense.performer |
Dispenser PRN |
dispensing-location-id |
MedicationDispense.location |
Dispensing location identifier |
facility-unit-id |
MedicationDispense.destination |
Destination facility unit identifier |
mcr |
MedicationRequest.requester (contained) |
Prescribing clinician MCR number |
snb |
MedicationRequest.requester (contained) |
Prescribing clinician SNB number |
dcr |
MedicationRequest.requester (contained) |
Prescribing clinician DCR number |
Patient Medication List
| Namespace |
Applied To |
Description |
pml-id |
List.identifier |
Patient Medication List identifier |
record-id |
MedicationStatement.identifier (recordIdentifier) |
System-assigned record identifier |
sequence-no |
MedicationStatement.identifier |
Sequence number |
group-no |
MedicationStatement.identifier |
Medication group number |
group-sequence-no |
MedicationStatement.identifier |
Group sequence number |
Patient Problem List
| Namespace |
Applied To |
Description |
sequence-no |
Condition.identifier |
Sequence number within the problem list |
Institution Care Plan Summary
| Namespace |
Applied To |
Description |
nric |
CarePlan.subject |
Patient NRIC reference |
eventID |
CarePlan.identifier |
Encounter event identifier |
mcr |
CarePlan.contributor |
Contributing clinician MCR number |
Procedure
| Namespace |
Applied To |
Description |
nric |
Procedure.performer |
Performer NRIC |
event-id |
Procedure.identifier |
Encounter event identifier |
Referral
| Namespace |
Applied To |
Description |
referral-id |
ServiceRequest.identifier |
Referral identifier |
mcr |
ServiceRequest.requester, ServiceRequest.performer |
Referring and receiving clinician MCR number |
ED Notes
| Namespace |
Applied To |
Description |
record-id |
Composition.identifier (recordIdentifier) |
System-assigned record identifier |
accession-no |
Composition.identifier |
Accession number |
event-id |
Composition.event.detail, Procedure.identifier |
Encounter event identifier |
ed-ref-no |
Encounter.identifier |
ED reference number |
hci-code |
Encounter.serviceProvider, Composition.author |
HCI code of the institution |
mcr |
Composition.author, MedicationRequest.requester (contained) |
Clinician MCR number |
mcr-no |
Encounter.participant.actor |
Clinician MCR number (ED encounter participant) |
procedure-id |
Procedure.identifier |
Procedure identifier |
sequence-no |
MedicationAdministration.identifier |
Sequence number |
group-no |
MedicationRequest.identifier (contained) |
Prescription group number |
snb |
MedicationRequest.requester (contained) |
Prescribing clinician SNB number |
prn |
MedicationRequest.requester (contained) |
Prescribing clinician PRN |
dcr |
MedicationRequest.requester (contained) |
Prescribing clinician DCR number |
OT Notes
| Namespace |
Applied To |
Description |
record-id |
Composition.identifier (recordIdentifier) |
System-assigned record identifier |
accession-no |
Composition.identifier |
Accession number |
hci-code |
Composition.author |
HCI code of the institution |
mcr |
Composition.author |
Authoring clinician MCR number |
sequence-no |
Procedure.identifier, Specimen.identifier, Observation.identifier, MedicationAdministration.identifier, DiagnosticReport.identifier, Condition.identifier |
Sequence number |
event-id |
Procedure.identifier |
Encounter event identifier |
Discharge Summary
| Namespace |
Applied To |
Description |
record-id |
Composition.identifier (recordIdentifier), Bundle.identifier |
System-assigned record identifier |
accession-no |
Composition.identifier |
Accession number |
case-no |
Encounter.identifier |
Case number |
sequence-no |
Procedure.identifier, MedicationRequest.identifier (contained) |
Sequence number |
mc-no |
DocumentReference.identifier |
Medical certificate number |
nric |
Condition.subject (contained diagnosis) |
Patient NRIC |
mcr |
Composition.author, MedicationRequest.requester (contained) |
Clinician MCR number |
snb |
MedicationRequest.requester (contained) |
Clinician SNB number |
prn |
MedicationRequest.requester (contained) |
Clinician PRN |
dcr |
MedicationRequest.requester (contained) |
Clinician DCR number |
Summary Notes
| Namespace |
Applied To |
Description |
record-id |
Composition.identifier (recordIdentifier) |
System-assigned record identifier |
accession-no |
Composition.identifier |
Accession number |
event-id |
Composition.event.detail |
Encounter event identifier |
hci-code |
Composition.author |
HCI code of the institution |
mcr |
Composition.author |
Authoring clinician MCR number |
nric |
Condition.subject, Procedure.performer, ServiceRequest.subject |
Patient NRIC |
investigation-id |
Observation.identifier |
Investigation identifier |
Screening Report / Screening Summary
| Namespace |
Applied To |
Description |
record-id |
DiagnosticReport.identifier |
System-assigned record identifier |
accession-no |
Observation.identifier |
Accession number |
workflow-no |
DiagnosticReport.identifier, Observation.identifier |
Screening workflow number |
investigation-id |
Observation.identifier |
Investigation identifier |
hci-code |
Encounter.serviceProvider, Observation.performer |
HCI code of the screening institution |
mcr |
DiagnosticReport.resultsInterpreter |
Reporting clinician MCR number |
Advance Care Plan
SGCDI data object #33. Implemented in the Synapxe ACP project.
| Namespace |
Applied To |
Description |
nric |
Patient.identifier |
Patient NRIC or FIN number |
acp-id |
Patient.identifier |
Advance Care Plan patient identifier |
Project-scoped namespaces used in CCDP FHIR operation definitions.
| Namespace |
Applied To |
Description |
systemcode |
OperationDefinition parameters |
Calling system code |
Project-scoped namespaces used in COGS Claim and Grant profiles.
| Namespace |
Applied To |
Description |
uen |
Organization.identifier |
Singapore Unique Entity Number |
ipc-uen |
Organization.identifier |
IPC-registered UEN |
previous-ipc-uen |
Organization.identifier |
Previous IPC-registered UEN |
acc-organization-id |
Organization.identifier |
ACC organisation identifier |
application-id |
Task.identifier, Claim.identifier |
Grant application identifier |
project-id |
Task.identifier, Claim.identifier |
Grant project identifier |
grant-call-id |
Task.identifier |
Grant call identifier |
claimrequest-id |
Claim.identifier |
Claim request identifier |
claimitem-id |
Claim.identifier, Task.identifier |
Claim item identifier |
claimsummary-id |
Claim.identifier |
Claim summary identifier |
disbursement-id |
PaymentNotice.identifier |
Disbursement identifier |
soe-request-id |
Task.identifier |
SOE request identifier |
source-ref-id |
Task.identifier |
Source reference identifier |
request-id |
Task.identifier |
Generic request identifier |
user-id |
Claim.identifier, Task.identifier |
Submitting user identifier |
user-email |
Task.identifier |
Submitting user email address |
Project-scoped namespaces. All prefixed with iccp-.
| Namespace |
Applied To |
Description |
iccp-nric |
Patient.identifier |
Patient NRIC (ICCP-scoped) |
iccp-org-uen |
Organization.identifier |
Organisation UEN (ICCP-scoped) |
iccp-community-care-plan-id |
CarePlan.identifier |
Community care plan identifier |
iccp-care-assessment-id |
QuestionnaireResponse.identifier |
InterRAI care assessment identifier |
iccp-interrai-careplan-id |
QuestionnaireResponse.identifier |
InterRAI care plan identifier |
iccp-location-code |
Location.identifier |
ICCP location code |
iccp-service-master |
Composition.identifier |
Service master code |
iccp-referral-id |
Composition.identifier |
Referral identifier |
Legacy — Healthier-SG (ihis.sg)
These namespaces use the legacy http://ihis.sg/identifier/ URL pattern. The modern equivalents use https://fhir.synapxe.sg/NamingSystem/.
| Legacy Namespace |
Applied To |
Description |
Modern Equivalent |
http://ihis.sg/identifier/nric |
Patient.identifier |
Singapore NRIC or FIN |
nric |
http://ihis.sg/identifier/hci-code |
Organization.identifier |
HCI code |
hci-code |
http://ihis.sg/identifier/mcr |
Practitioner.identifier |
MCR number |
mcr |
http://ihis.sg/identifier/prs |
Practitioner.identifier |
Provider Registration System number |
— |
Legacy — ASG / Age Well SG (ihis.sg)
These namespaces use the legacy http://ihis.sg/identifier/ URL pattern.
| Legacy Namespace |
Applied To |
Description |
Modern Equivalent |
http://ihis.sg/identifier/nric |
Patient.identifier, QuestionnaireResponse.subject |
Singapore NRIC |
nric |
http://ihis.sg/identifier/fin |
Practitioner.identifier |
Foreign Identification Number |
— |
http://ihis.sg/identifier/others |
Practitioner.identifier |
Other identifier type |
— |
http://ihis.sg/identifier/uen |
Organization.identifier |
Singapore UEN |
uen |
http://ihis.sg/identifier/aac-center-id |
Organization.identifier, Composition.author |
AAC centre identifier |
— |
http://ihis.sg/identifier/aac-staff-id |
Practitioner.identifier |
AAC staff identifier |
— |
http://ihis.sg/identifier/cst-identifier-value |
QuestionnaireResponse.identifier |
Community Silver Trust (CST) identifier |
— |
http://ihis.sg/identifier/phv-identifier-value |
QuestionnaireResponse.identifier |
Pillar Health Volunteer (PHV) identifier |
— |
http://ihis.sg/identifier/cs-outcome-identifier-value |
Observation.identifier |
Community service outcome identifier |
— |
Legacy — CCDA (ihis.sg)
These namespaces use the legacy http://ihis.sg/identifier/ URL pattern.
| Legacy Namespace |
Applied To |
Description |
Modern Equivalent |
http://ihis.sg/identifier/institution-code |
Composition.author, DocumentReference.author |
Institution code |
hci-code |
http://ihis.sg/identifier/ccda |
DocumentReference.identifier |
CCDA document identifier |
— |
http://ihis.sg/identifier/encrypted-nric |
DocumentReference.subject |
Encrypted patient NRIC |
— |
