diff --git a/specification/resourcehealth/resource-manager/Microsoft.ResourceHealth/stable/2018-07-01/ResourceHealth.json b/specification/resourcehealth/resource-manager/Microsoft.ResourceHealth/stable/2018-07-01/ResourceHealth.json
index daabe2fe08bd..641ea46f5f22 100644
--- a/specification/resourcehealth/resource-manager/Microsoft.ResourceHealth/stable/2018-07-01/ResourceHealth.json
+++ b/specification/resourcehealth/resource-manager/Microsoft.ResourceHealth/stable/2018-07-01/ResourceHealth.json
@@ -45,6 +45,9 @@
           {
             "$ref": "#/parameters/FilterParameter"
           },
+          {
+            "$ref": "#/parameters/QueryStartTimeParameter"
+          },
           {
             "$ref": "#/parameters/SubscriptionIdParameter"
           },
@@ -1356,7 +1359,15 @@
       "in": "query",
       "required": false,
       "type": "string",
-      "description": "The filter to apply on the operation. For more information please see https://docs.microsoft.com/en-us/rest/api/apimanagement/apis?redirectedfrom=MSDN",
+      "description": "A valid odata query to limit the events returned. The logical operators and, or, equal, not equal, and top are supported. For example, $filter=Properties/EventType eq 'ServiceIssue' or Properties/EventType eq 'PlannedMaintenance' OR %24filter=Properties%2FEventType%20eq%20%27ServiceIssue%27%20or%20Properties%2FEventType%20eq%20%27PlannedMaintenance%27",
+      "x-ms-parameter-location": "method"
+    },
+    "QueryStartTimeParameter": {
+      "name": "queryStartTime",
+      "in": "query",
+      "required": false,
+      "type": "string",
+      "description": "Specifies from when to return events, based on the lastUpdateTime property. For example, queryStartTime = 7/24/2020 OR queryStartTime=7%2F24%2F2020",
       "x-ms-parameter-location": "method"
     },
     "ExpandParameter": {
diff --git a/specification/resourcehealth/resource-manager/Microsoft.ResourceHealth/stable/2018-07-01/examples/Events_ListBySubscriptionId.json b/specification/resourcehealth/resource-manager/Microsoft.ResourceHealth/stable/2018-07-01/examples/Events_ListBySubscriptionId.json
index 11c578ca672a..da7b93b0c303 100644
--- a/specification/resourcehealth/resource-manager/Microsoft.ResourceHealth/stable/2018-07-01/examples/Events_ListBySubscriptionId.json
+++ b/specification/resourcehealth/resource-manager/Microsoft.ResourceHealth/stable/2018-07-01/examples/Events_ListBySubscriptionId.json
@@ -2,7 +2,8 @@
   "parameters": {
     "subscriptionId": "subscriptionId",
     "api-version": "2018-07-01-preview",
-    "$filter": "service eq 'Virtual Machines' or region eq 'West US'"
+    "$filter": "service eq 'Virtual Machines' or region eq 'West US'",
+    "queryStartTime": "7/24/2020"
   },
   "responses": {
     "200": {