FHIR IG analytics| Package | hl7.fhir.us.uscdi-scd |
| Resource Type | StructureDefinition |
| Id | StructureDefinition-scd-transfusion-antigen-match.json |
| FHIR Version | R4 |
| Source | https://build.fhir.org/ig/hlnconsulting/uscdi-scd-ig/StructureDefinition-scd-transfusion-antigen-match.html |
| URL | http://hl7.org/fhir/us/uscdi-scd/StructureDefinition/scd-transfusion-antigen-match |
| Version | 0.1.0 |
| Status | active |
| Date | 2026-09-11T00:10:30+00:00 |
| Name | SCDTransfusionAntigenMatchExtension |
| Title | SCD Transfusion Red Cell Antigen Match Profile |
| Realm | us |
| Authority | hl7 |
| Description | Documents the red cell antigen matching criteria that were applied in selecting a blood product for transfusion in a patient with Sickle Cell Disease. Extended antigen-matched transfusion — typically including C, c, E, e (Rh), K (Kell), Fya/Fyb (Duffy), and Jka/Jkb (Kidd) at minimum — significantly reduces the risk of alloimmunization in SCD patients on chronic transfusion therapy. This extension enables structured documentation of which antigens were matched for a given transfusion event. This extension SHALL be used on SCDBiologicallyDerivedProduct instances when extended antigen matching was performed. It MAY also be used on the SCDProcedure instance representing the transfusion to document the matching requirements specified in the order. |
| Type | Extension |
| Kind | complex-type |
No resources found
| ValueSet | ||
| hl7.fhir.us.uscdi-scd#current | scd-red-cell-antigen-vs | SCD Red Cell Antigen Value Set |
| Resource | Version |
|---|---|
| hl7.fhir.us.uscdi-scd#current:BiologicallyDerivedProduct/prbcs-antigen-matched-example | R4 |
Note: links and images are rebased to the (stated) source
Generated Narrative: StructureDefinition scd-transfusion-antigen-match
| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  Extension | 0..* | Extension | Extension | |
  Slices for extension | Content/Rules for all slices | |||
   extension:matchedAntigen | S | 0..* | Extension | Specific antigen confirmed matched/negative |
   extension | 0..0 | Extension | ||
| url | 1..1 | uri | "matchedAntigen" | |
  value[x] | 0..1 | CodeableConcept | Value of extension Binding: SCD Red Cell Antigen Value Set (extensible) | |
 extension:matchingProtocol | S | 0..1 | Extension | Antigen matching protocol used |
 extension | 0..0 | Extension | ||
| url | 1..1 | uri | "matchingProtocol" | |
 value[x] | 0..1 | string | Value of extension | |
| url | 1..1 | uri | "http://hl7.org/fhir/us/uscdi-scd/StructureDefinition/scd-transfusion-antigen-match" | |
 value[x] | 0..0 | Value of extension | ||
| Documentation for this format | ||||
FHIR
FHIRsmith{
"resourceType": "StructureDefinition",
"id": "scd-transfusion-antigen-match",
"text": {
"status": "extensions",
"div": "<!-- snip (see above) -->"
},
"url": "http://hl7.org/fhir/us/uscdi-scd/StructureDefinition/scd-transfusion-antigen-match",
"version": "0.1.0",
"name": "SCDTransfusionAntigenMatchExtension",
"title": "SCD Transfusion Red Cell Antigen Match Profile",
"status": "active",
"experimental": false,
"date": "2026-09-11T00:10:30+00:00",
"publisher": "HL7 International / Public Health",
"contact": [
{
"name": "HL7 International / Public Health",
"telecom": [
{
"system": "url",
"value": "https://www.hl7.org/Special/committees/pher"
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"value": "pher@lists.HL7.org"
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{
"name": "HL7 Public Health Work Group",
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"value": "http://www.hl7.org/Special/committees/pher"
},
{
"system": "email",
"value": "pher@lists.HL7.org"
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]
}
],
"description": "Documents the red cell antigen matching criteria that were applied in\nselecting a blood product for transfusion in a patient with Sickle Cell Disease.\n\nExtended antigen-matched transfusion — typically including C, c, E, e (Rh),\nK (Kell), Fya/Fyb (Duffy), and Jka/Jkb (Kidd) at minimum — significantly\nreduces the risk of alloimmunization in SCD patients on chronic transfusion\ntherapy. This extension enables structured documentation of which antigens\nwere matched for a given transfusion event.\n\nThis extension SHALL be used on SCDBiologicallyDerivedProduct instances when\nextended antigen matching was performed. It MAY also be used on the SCDProcedure\ninstance representing the transfusion to document the matching requirements\nspecified in the order.",
"jurisdiction": [
{
"coding": [
{
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"code": "US",
"display": "United States of America"
}
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{
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{
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{
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],
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{
"id": "Extension.extension:matchedAntigen.url",
"path": "Extension.extension.url",
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"min": 1,
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"base": {
"path": "Extension.url",
"min": 1,
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]
},
{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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"differential": {
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{
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"path": "Extension"
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{
"id": "Extension.extension:matchedAntigen",
"path": "Extension.extension",
"sliceName": "matchedAntigen",
"short": "Specific antigen confirmed matched/negative",
"definition": "A specific red cell antigen that was confirmed negative (matched) in the selected blood product.",
"min": 0,
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{
"id": "Extension.extension:matchedAntigen.extension",
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{
"id": "Extension.extension:matchedAntigen.url",
"path": "Extension.extension.url",
"fixedUri": "matchedAntigen"
},
{
"id": "Extension.extension:matchedAntigen.value[x]",
"path": "Extension.extension.value[x]",
"type": [
{
"code": "CodeableConcept"
}
],
"binding": {
"strength": "extensible",
"valueSet": "http://hl7.org/fhir/us/uscdi-scd/ValueSet/scd-red-cell-antigen-vs"
}
},
{
"id": "Extension.extension:matchingProtocol",
"path": "Extension.extension",
"sliceName": "matchingProtocol",
"short": "Antigen matching protocol used",
"definition": "The institutional or standard matching protocol applied (e.g., 'CcEeK matching', 'Extended 5-antigen match', 'Full phenotype match').",
"min": 0,
"max": "1",
"mustSupport": true
},
{
"id": "Extension.extension:matchingProtocol.extension",
"path": "Extension.extension.extension",
"max": "0"
},
{
"id": "Extension.extension:matchingProtocol.url",
"path": "Extension.extension.url",
"fixedUri": "matchingProtocol"
},
{
"id": "Extension.extension:matchingProtocol.value[x]",
"path": "Extension.extension.value[x]",
"type": [
{
"code": "string"
}
]
},
{
"id": "Extension.url",
"path": "Extension.url",
"fixedUri": "http://hl7.org/fhir/us/uscdi-scd/StructureDefinition/scd-transfusion-antigen-match"
},
{
"id": "Extension.value[x]",
"path": "Extension.value[x]",
"max": "0"
}
]
}
}