diff --git a/modules/vaos/app/schemas/appointments_index.json b/modules/vaos/app/schemas/appointments_index.json
index 725e3c22c71..4db0c3b8974 100644
--- a/modules/vaos/app/schemas/appointments_index.json
+++ b/modules/vaos/app/schemas/appointments_index.json
@@ -91,25 +91,22 @@
             }
           },
           "reason_code": {
-            "type": "array",
-            "items": {
-              "type": "object",
-              "additionalProperties": false,
-              "properties": {
-                "coding": {
-                  "type": "array",
-                  "items": {
-                    "type": "object",
-                    "additionalProperties": false,
-                    "properties": {
-                      "system": { "type": "string" },
-                      "code": { "type": "string" },
-                      "display": { "type": "string" }
-                    }
+            "type": "object",
+            "additionalProperties": false,
+            "properties": {
+              "coding": {
+                "type": "array",
+                "items": {
+                  "type": "object",
+                  "additionalProperties": false,
+                  "properties": {
+                    "system": { "type": "string" },
+                    "code": { "type": "string" },
+                    "display": { "type": "string" }
                   }
-                },
-                "text": { "type": "string" }
-              }
+                }
+              },
+              "text": { "type": "string" }
             }
           },
           "description": { "type": "string" },
@@ -135,7 +132,8 @@
           "practitioners": {
             "type": "array",
             "items": {
-              "type": "array",
+              "type": "object",
+              "additionalProperties": false,
               "properties": {
                 "identifier": {
                   "type": "array",
@@ -160,7 +158,7 @@
                     }
                   }
                 },
-                "practiceName": { "type": "string" },
+                "practice_name": { "type": "string" },
                 "address": {
                   "type": "object",
                   "additionalProperties": false,
@@ -175,13 +173,13 @@
                     },
                     "city": { "type": "string" },
                     "state": { "type": "string" },
-                    "postalCode": { "type": "string" },
+                    "postal_code": { "type": "string" },
                     "country": { "type": "string" },
                     "text": { "type": "string" }
                   }
                 },
-                "firstName": { "type": "string" },
-                "lastName": { "type": "string" }
+                "first_name": { "type": "string" },
+                "last_name": { "type": "string" }
               }
             }
           },
@@ -290,20 +288,20 @@
                 "type": "object",
                 "additionalProperties": false,
                 "properties": {
-                  "sitecode": { "type": "string" },
-                  "confirmationCode": { "type": "string" },
+                  "site_code": { "type": "string" },
+                  "confirmation_code": { "type": "string" },
                   "address": {
                     "type": "object",
                     "additionalProperties": false,
                     "properties": {
-                      "streetAddress": { "type": "string" },
+                      "street_address": { "type": "string" },
                       "city": { "type": "string" },
                       "state": { "type": "string" },
-                      "zipCode": { "type": "string" },
+                      "zip_code": { "type": "string" },
                       "country": { "type": "string" },
-                      "latitude": { "type": "number" },
+                      "latitutde": { "type": "number" },
                       "longitude": { "type": "number" },
-                      "additionalDetails": { "type": "string" }
+                      "additional_details": { "type": "string" }
                     }
                   }
                 }
@@ -316,7 +314,10 @@
             "type": "object",
             "additionalProperties": false,
             "properties": {
-              "ccLocation": {
+              "desired_date": {
+                "type": "string"
+              },
+              "cc_location": {
                 "type": "object",
                 "additionalProperties": false,
                 "properties": {
@@ -334,7 +335,7 @@
                       },
                       "city": { "type": "string" },
                       "state": { "type": "string" },
-                      "postalCode": { "type": "string" },
+                      "postal_code": { "type": "string" },
                       "country": { "type": "string" },
                       "text": { "type": "string" }
                     }
@@ -353,7 +354,54 @@
                       }
                     }
                   },
-                  "practiceName": { "type": "string" }
+                  "practice_name": { "type": "string" }
+                }
+              },
+              "cc_requested_cancellation": { "type": "boolean" },
+              "hsrm_tast_id": { "type": "string" },
+              "hsrm_consult_id": { "type": "string" },
+              "vista_status": {
+                "type": "array",
+                "items": { "type": "string" }
+              },
+              "cc_treating_specialty": { "type": "string" },
+              "modality": { "type": "string" },
+              "patient_has_mobile_gfe": { "type": "boolean" },
+              "pre_checkin_allowed": { "type": "boolean" },
+              "e_checkin_allowed": { "type": "boolean" },
+              "clinic": {
+                "type": "object",
+                "additionalProperties": false,
+                "properties": {
+                  "vista_site": {
+                    "type": "integer",
+                    "maxLength": 3,
+                    "minLength": 3
+                  },
+                  "id": { "type": "string" },
+                  "service_name": { "type": "string" },
+                  "physical_location": { "type": "string" },
+                  "phone_number": { "type": "string" },
+                  "station_id": { "type": "string" },
+                  "station_name": { "type": "string" },
+                  "primary_stop_code": {
+                    "type": "integer",
+                    "maxLength": 3,
+                    "minLength": 3
+                   },
+                   "primary_stop_code_name": { "type": "string" },
+                   "secondary_stop_code": {
+                    "type": "integer",
+                    "maxLength": 3,
+                    "minLength": 3
+                   },
+                   "secondary_stop_code_name": { "type": "string" },
+                   "patient_direct_scheduling": { "type": "boolean" },
+                   "patient_display": { "type": "boolean" },
+                   "char4": { "type": "string" },
+                   "active": { "type": "boolean" },
+                   "non_count": { "type": "boolean" },
+                   "future_booking_maximum_days": { "type": "integer" }
                 }
               }
             }
diff --git a/modules/vaos/app/services/vaos/v2/appointments_service.rb b/modules/vaos/app/services/vaos/v2/appointments_service.rb
index 3fcadb28f69..fda329d27f4 100644
--- a/modules/vaos/app/services/vaos/v2/appointments_service.rb
+++ b/modules/vaos/app/services/vaos/v2/appointments_service.rb
@@ -31,7 +31,7 @@ def get_appointments(start_date, end_date, statuses = nil, pagination_params = {
 
         with_monitoring do
           response = perform(:get, appointments_base_path, params, headers)
-          SchemaContract::ValidationInitiator.call(user:, response:, contract_name: 'appointments_index')
+          validate_response_schema(response, 'appointments_index')
           response.body[:data].each do |appt|
             # for CnP and covid appointments set cancellable to false per GH#57824, GH#58690
             set_cancellable_false(appt) if cnp?(appt) || covid?(appt)
@@ -538,6 +538,12 @@ def update_appointment_vaos(appt_id, status)
         params = VAOS::V2::UpdateAppointmentForm.new(status:).params
         perform(:put, url_path, params, headers)
       end
+
+      def validate_response_schema(response, contract_name)
+        return unless response.success? && response.body[:data].present?
+
+        SchemaContract::ValidationInitiator.call(user:, response:, contract_name:)
+      end
     end
   end
 end