diff --git a/fhir-server-spi/src/main/java/org/linuxforhealth/fhir/server/spi/operation/AbstractOperation.java b/fhir-server-spi/src/main/java/org/linuxforhealth/fhir/server/spi/operation/AbstractOperation.java
index 6ede7f28f3a..83cb1d4f93e 100644
--- a/fhir-server-spi/src/main/java/org/linuxforhealth/fhir/server/spi/operation/AbstractOperation.java
+++ b/fhir-server-spi/src/main/java/org/linuxforhealth/fhir/server/spi/operation/AbstractOperation.java
@@ -209,6 +209,7 @@ private boolean isGetMethodAllowed(OperationDefinition operationDefinition, Para
                 for (OperationDefinition.Parameter odParameter : operationDefinition.getParameter()) {
                     if (parameter.getName().getValue() != null && odParameter.getName() != null
                             && parameter.getName().getValue().equals(odParameter.getName().getValue())
+                            && odParameter.getUse().getValueAsEnum().equals(OperationParameterUse.IN)
                             && (odParameter.getType() == null || !ModelSupport.isPrimitiveType(ModelSupport.getDataType(odParameter.getType().getValue()))
                                     || (odParameter.getPart() != null && !odParameter.getPart().isEmpty()))) {
                         return false;
diff --git a/term/fhir-term/src/main/java/org/linuxforhealth/fhir/term/service/FHIRTermService.java b/term/fhir-term/src/main/java/org/linuxforhealth/fhir/term/service/FHIRTermService.java
index 644da199a0b..7440da614a6 100644
--- a/term/fhir-term/src/main/java/org/linuxforhealth/fhir/term/service/FHIRTermService.java
+++ b/term/fhir-term/src/main/java/org/linuxforhealth/fhir/term/service/FHIRTermService.java
@@ -414,7 +414,7 @@ public LookupOutcome lookup(Coding coding) {
      */
     public LookupOutcome lookup(Coding coding, LookupParameters parameters) {
         if (!LookupParameters.EMPTY.equals(parameters)) {
-            throw new UnsupportedOperationException("Lookup parameters are not suppored");
+            throw new UnsupportedOperationException("Lookup parameters are not supported");
         }
         java.lang.String system = (coding.getSystem() != null) ? coding.getSystem().getValue() : null;
         java.lang.String version = (coding.getVersion() != null) ? coding.getVersion().getValue() : null;