diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/TerminologyRenderer.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/TerminologyRenderer.java
index d90d652ba..b9fc4a258 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/TerminologyRenderer.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/TerminologyRenderer.java
@@ -256,7 +256,7 @@ public abstract class TerminologyRenderer extends ResourceRenderer {
     if (cs == null) {
       return null;
     }
-    ConceptDefinitionComponent cc = CodeSystemUtilities.getCode(cs, code);
+    ConceptDefinitionComponent cc = code == null ? null : CodeSystemUtilities.getCode(cs, code);
     return cc == null ? null : cc.getDisplay();
   }
 
diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/terminologies/CodeSystemUtilities.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/terminologies/CodeSystemUtilities.java
index 5482a2645..03d7fbdf8 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/terminologies/CodeSystemUtilities.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/terminologies/CodeSystemUtilities.java
@@ -430,6 +430,9 @@ public class CodeSystemUtilities {
   }
 
   public static ConceptDefinitionComponent getCode(CodeSystem cs, String code) {
+    if (code == null) {
+      return null;
+    }
     for (ConceptDefinitionComponent cc : cs.getConcept()) {
       ConceptDefinitionComponent cd = getCode(cc, code);
       if (cd != null) {