diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/conformance/AdditionalBindingsRenderer.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/conformance/AdditionalBindingsRenderer.java
index b303a7f72..7a9b879c3 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/conformance/AdditionalBindingsRenderer.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/conformance/AdditionalBindingsRenderer.java
@@ -19,6 +19,7 @@ import org.hl7.fhir.r5.model.Extension;
 import org.hl7.fhir.r5.model.PrimitiveType;
 import org.hl7.fhir.r5.model.StructureDefinition;
 import org.hl7.fhir.r5.model.UsageContext;
+import org.hl7.fhir.r5.model.ValueSet;
 import org.hl7.fhir.r5.renderers.CodeResolver;
 import org.hl7.fhir.r5.renderers.CodeResolver.CodeResolution;
 import org.hl7.fhir.r5.renderers.DataRenderer;
@@ -47,6 +48,8 @@ public class AdditionalBindingsRenderer {
     private boolean isUnchanged = false;
     private boolean matched = false;
     private boolean removed = false;
+    private ValueSet vs;
+    
     private AdditionalBindingDetail compare;
     private int count = 1;
     private String getKey() {
@@ -419,4 +422,20 @@ public class AdditionalBindingsRenderer {
     return c.getCode();
   }
 
+  public void seeAdditionalBinding(String purpose, String doco, ValueSet valueSet) {
+    AdditionalBindingDetail abr = new AdditionalBindingDetail();
+    abr.purpose =  purpose;
+    abr.valueSet =  valueSet.getUrl();
+    abr.vs = valueSet;
+    bindings.add(abr);
+  }
+
+  public void seeAdditionalBinding(String purpose, String doco, String ref) {
+    AdditionalBindingDetail abr = new AdditionalBindingDetail();
+    abr.purpose =  purpose;
+    abr.valueSet =  ref;
+    bindings.add(abr);
+    
+  }
+
 }
diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/CodeSystemRenderer.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/CodeSystemRenderer.java
index c3429b34e..783974fc9 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/CodeSystemRenderer.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/CodeSystemRenderer.java
@@ -371,7 +371,11 @@ public class CodeSystemRenderer extends TerminologyRenderer {
           for (ConceptDefinitionDesignationComponent cd : c.getDesignation()) 
             if (cd.getUse().is("http://terminology.hl7.org/CodeSystem/designation-usage", "definition") && cd.hasLanguage() && !c.getDefinition().equalsIgnoreCase(cd.getValue())) 
               sl = true;
-          td.addText((sl ? cs.getLanguage("en")+": " : "")+c.getDefinition());
+          td.addText((sl ? cs.getLanguage("en")+": " : ""));
+          if (hasMarkdownInDefinitions(cs))
+            addMarkdown(td, c.getDefinition());
+          else
+            td.addText(c.getDefinition());
           for (ConceptDefinitionDesignationComponent cd : c.getDesignation()) {
             if (cd.getUse().is("http://terminology.hl7.org/CodeSystem/designation-usage", "definition") && cd.hasLanguage() && !c.getDefinition().equalsIgnoreCase(cd.getValue())) {
               td.br();