changed base profile to hl7, added sct ValueSet as per previous iteration

Author: ryma2fhir

structuredefinitions/UKCore-Observation-VitalSigns-BloodPressure.xml

@@ -2,11 +2,11 @@
 <StructureDefinition xmlns="http://hl7.org/fhir">
   <id value="UKCore-Observation-VitalSigns-BloodPressure" />
   <url value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-VitalSigns-BloodPressure" />
-  <version value="0.1.1" />
+  <version value="0.2.0" />
   <name value="UKCoreObservationVitalSignsBloodPressure" />
   <title value="UK Core Observation Vital Signs Blood Pressure" />
   <status value="draft" />
-  <date value="2025-11-06" />
+  <date value="2026-04-07" />
   <publisher value="HL7 UK" />
   <contact>
     <name value="HL7 UK" />
@@ -24,19 +24,30 @@
   <kind value="resource" />
   <abstract value="false" />
   <type value="Observation" />
-  <baseDefinition value="https://fhir.hl7.org.uk/StructureDefinition/UKCore-Observation-VitalSigns" />
+  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/bp" />
   <derivation value="constraint" />
   <differential>
-    <element id="Observation.code">
-      <path value="Observation.code" />
+    <element id="Observation.code.coding">
+      <path value="Observation.code.coding" />
+      <slicing>
+        <discriminator>
+          <type value="value" />
+          <path value="system" />
+        </discriminator>
+        <rules value="open" />
+      </slicing>
+    </element>
+    <element id="Observation.code.coding:BPCodeSnomedct">
+      <path value="Observation.code.coding" />
+      <sliceName value="BPCodeSnomedct" />
       <binding>
         <strength value="preferred" />
         <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure" />
       </binding>
     </element>
-    <element id="Observation.value[x]">
-      <path value="Observation.value[x]" />
-      <max value="0" />
+    <element id="Observation.code.coding:BPCodeSnomedct.system">
+      <path value="Observation.code.coding.system" />
+      <fixedUri value="http://snomed.info/sct" />
     </element>
     <element id="Observation.method">
       <path value="Observation.method" />
@@ -61,27 +72,39 @@
       <path value="Observation.component" />
       <slicing>
         <discriminator>
-          <type value="value" />
-          <path value="code.text" />
+          <type value="pattern" />
+          <path value="$this" />
         </discriminator>
         <rules value="closed" />
       </slicing>
-      <min value="1" />
       <max value="2" />
     </element>
     <element id="Observation.component:SystolicBP">
       <path value="Observation.component" />
       <sliceName value="SystolicBP" />
-      <min value="1" />
-      <max value="1" />
     </element>
-    <element id="Observation.component:SystolicBP.code">
-      <path value="Observation.component.code" />
+    <element id="Observation.component:SystolicBP.code.coding">
+      <path value="Observation.component.code.coding" />
+      <slicing>
+        <discriminator>
+          <type value="value" />
+          <path value="system" />
+        </discriminator>
+        <rules value="open" />
+      </slicing>
+    </element>
+    <element id="Observation.component:SystolicBP.code.coding:SBPCodeSnomedCT">
+      <path value="Observation.component.code.coding" />
+      <sliceName value="SBPCodeSnomedCT" />
       <binding>
         <strength value="preferred" />
         <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-Systolic" />
       </binding>
     </element>
+    <element id="Observation.component:SystolicBP.code.coding:SBPCodeSnomedCT.system">
+      <path value="Observation.component.code.coding.system" />
+      <fixedUri value="http://snomed.info/sct" />
+    </element>
     <element id="Observation.component:SystolicBP.value[x]">
       <path value="Observation.component.value[x]" />
       <min value="1" />
@@ -104,15 +127,31 @@
     <element id="Observation.component:DiastolicBP">
       <path value="Observation.component" />
       <sliceName value="DiastolicBP" />
-      <max value="1" />
     </element>
-    <element id="Observation.component:DiastolicBP.code">
-      <path value="Observation.component.code" />
+    <element id="Observation.component:DiastolicBP.code.coding:diastolicbp-code-loinc">
+      <path value="Observation.component.code.coding" />
+      <sliceName value="diastolicbp-code-loinc" />
+    </element>
+    <element id="Observation.component:DiastolicBP.code.coding:diastolicbp-code-loinc.system">
+      <path value="Observation.component.code.coding.system" />
+      <fixedUri value="http://loinc.org" />
+    </element>
+    <element id="Observation.component:DiastolicBP.code.coding:diastolicbp-code-loinc.code">
+      <path value="Observation.component.code.coding.code" />
+      <fixedCode value="8462-4" />
+    </element>
+    <element id="Observation.component:DiastolicBP.code.coding:diastolic-code-snomedct">
+      <path value="Observation.component.code.coding" />
+      <sliceName value="diastolic-code-snomedct" />
       <binding>
         <strength value="preferred" />
         <valueSet value="https://fhir.hl7.org.uk/ValueSet/UKCore-BloodPressure-Diastolic" />
       </binding>
     </element>
+    <element id="Observation.component:DiastolicBP.code.coding:diastolic-code-snomedct.system">
+      <path value="Observation.component.code.coding.system" />
+      <fixedUri value="http://snomed.info/sct" />
+    </element>
     <element id="Observation.component:DiastolicBP.value[x]">
       <path value="Observation.component.value[x]" />
       <min value="1" />