diff --git a/EHS/CH-MHD/CH_ITI-65-ProvideDocumentBundle-PostRequest-ValidationProfile.json b/EHS/CH-MHD/CH_ITI-65-ProvideDocumentBundle-PostRequest-ValidationProfile.json
index de7f62a5ea7f2db8a1f1b8fc90f46fe297126009..f37a977e5a50d86d5e2675e49ad9b3b47ac321f3 100644
--- a/EHS/CH-MHD/CH_ITI-65-ProvideDocumentBundle-PostRequest-ValidationProfile.json
+++ b/EHS/CH-MHD/CH_ITI-65-ProvideDocumentBundle-PostRequest-ValidationProfile.json
@@ -111,6 +111,32 @@
               "regex": "^(?!f{2})([\\da-f]{2})-(?!0{32})([\\da-f]{32})-(?!0{16})([\\da-f]{16})-([\\da-f]{2})$"
             }
           ]
+        },{
+          "selector": "request.headers('Accept').values",
+          "id": "Accept_parameter_presence",
+          "description": "The Accept parameter is mandatory.",
+          "requirementPriority": "MANDATORY",
+          "checksComposition": "oneOf",
+          "checks": [
+            {
+              "type": "OCCURRENCE",
+              "minOccurrence": 1,
+              "maxOccurrence": 1
+            }
+          ]
+        },
+        {
+          "selector": "request.headers('Accept').values",
+          "id": "Accept_parameter_value",
+          "description": "Accept parameter's value SHALL be as defined in https://build.fhir.org/http.html#mime-type.",
+          "requirementPriority": "MANDATORY",
+          "checksComposition": "oneOf",
+          "checks": [
+            {
+              "type": "REGEX",
+              "regex": "^application\\/fhir\\+(xml|json|turtle)(;( )?fhirVersion=\\d\\.\\d)?$"
+            }
+          ]
         },
         {
           "selector": "request.uri.queryParams('_format').values",
diff --git a/EHS/CH-MHD/CH_ITI-66-FindDocumentLists-GetPostRequest-ValidationProfile.json b/EHS/CH-MHD/CH_ITI-66-FindDocumentLists-GetPostRequest-ValidationProfile.json
index d099f07b6fa7f9739666f9cca73cf880758731a2..7d2c637b00c074c9028754f222cd800b01b93a72 100644
--- a/EHS/CH-MHD/CH_ITI-66-FindDocumentLists-GetPostRequest-ValidationProfile.json
+++ b/EHS/CH-MHD/CH_ITI-66-FindDocumentLists-GetPostRequest-ValidationProfile.json
@@ -114,6 +114,32 @@
           "regex": "^(?!f{2})([\\da-f]{2})-(?!0{32})([\\da-f]{32})-(?!0{16})([\\da-f]{16})-([\\da-f]{2})$"
         }
       ]
+    },{
+      "selector": "request.headers('Accept').values",
+      "id": "Accept_parameter_presence",
+      "description": "The Accept parameter is mandatory.",
+      "requirementPriority": "MANDATORY",
+      "checksComposition": "oneOf",
+      "checks": [
+        {
+          "type": "OCCURRENCE",
+          "minOccurrence": 1,
+          "maxOccurrence": 1
+        }
+      ]
+    },
+    {
+      "selector": "request.headers('Accept').values",
+      "id": "Accept_parameter_value",
+      "description": "Accept parameter's value SHALL be as defined in https://build.fhir.org/http.html#mime-type.",
+      "requirementPriority": "MANDATORY",
+      "checksComposition": "oneOf",
+      "checks": [
+        {
+          "type": "REGEX",
+          "regex": "^application\\/fhir\\+(xml|json|turtle)(;( )?fhirVersion=\\d\\.\\d)?$"
+        }
+      ]
     },
     {
       "selector": "request.uri.queryParams('code').values",
diff --git a/EHS/CH-MHD/CH_ITI-67-FindDocumentReferences-GetPostRequest-ValidationProfile.json b/EHS/CH-MHD/CH_ITI-67-FindDocumentReferences-GetPostRequest-ValidationProfile.json
index dafb01c20593dcdf0aa6bc1bbbc2c2d4fe605d22..5ac5c963ab8904e6ff49b953f9f7d01f92d41e00 100644
--- a/EHS/CH-MHD/CH_ITI-67-FindDocumentReferences-GetPostRequest-ValidationProfile.json
+++ b/EHS/CH-MHD/CH_ITI-67-FindDocumentReferences-GetPostRequest-ValidationProfile.json
@@ -114,6 +114,32 @@
           "regex": "^(?!f{2})([\\da-f]{2})-(?!0{32})([\\da-f]{32})-(?!0{16})([\\da-f]{16})-([\\da-f]{2})$"
         }
       ]
+    },{
+      "selector": "request.headers('Accept').values",
+      "id": "Accept_parameter_presence",
+      "description": "The Accept parameter is mandatory.",
+      "requirementPriority": "MANDATORY",
+      "checksComposition": "oneOf",
+      "checks": [
+        {
+          "type": "OCCURRENCE",
+          "minOccurrence": 1,
+          "maxOccurrence": 1
+        }
+      ]
+    },
+    {
+      "selector": "request.headers('Accept').values",
+      "id": "Accept_parameter_value",
+      "description": "Accept parameter's value SHALL be as defined in https://build.fhir.org/http.html#mime-type.",
+      "requirementPriority": "MANDATORY",
+      "checksComposition": "oneOf",
+      "checks": [
+        {
+          "type": "REGEX",
+          "regex": "^application\\/fhir\\+(xml|json|turtle)(;( )?fhirVersion=\\d\\.\\d)?$"
+        }
+      ]
     },
     {
       "selector": "request.uri.queryParams('author.given').values",
diff --git a/EHS/CH-MHD/CH_ITI-68-Retrieve Document-ValidationProfile.json b/EHS/CH-MHD/CH_ITI-68-Retrieve Document-ValidationProfile.json
index 675d598f06106e159c16460719aed492ccfba82d..0fe4ec0153ad0c4967fd4305a1acf97200c4b8a6 100644
--- a/EHS/CH-MHD/CH_ITI-68-Retrieve Document-ValidationProfile.json	
+++ b/EHS/CH-MHD/CH_ITI-68-Retrieve Document-ValidationProfile.json	
@@ -111,6 +111,32 @@
           "regex": "^(?!f{2})([\\da-f]{2})-(?!0{32})([\\da-f]{32})-(?!0{16})([\\da-f]{16})-([\\da-f]{2})$"
         }
       ]
+    },{
+      "selector": "request.headers('Accept').values",
+      "id": "Accept_parameter_presence",
+      "description": "The Accept parameter is mandatory.",
+      "requirementPriority": "MANDATORY",
+      "checksComposition": "oneOf",
+      "checks": [
+        {
+          "type": "OCCURRENCE",
+          "minOccurrence": 1,
+          "maxOccurrence": 1
+        }
+      ]
+    },
+    {
+      "selector": "request.headers('Accept').values",
+      "id": "Accept_parameter_value",
+      "description": "Accept parameter's value SHALL be as defined in https://build.fhir.org/http.html#mime-type.",
+      "requirementPriority": "MANDATORY",
+      "checksComposition": "oneOf",
+      "checks": [
+        {
+          "type": "REGEX",
+          "regex": "^application\\/fhir\\+(xml|json|turtle)(;( )?fhirVersion=\\d\\.\\d)?$"
+        }
+      ]
     }
   ]
 }
\ No newline at end of file