diff --git a/app/models/citystate_hospitals.ts b/app/models/citystate_hospitals.ts
index c9e869e..7efc299 100644
--- a/app/models/citystate_hospitals.ts
+++ b/app/models/citystate_hospitals.ts
@@ -10,8 +10,8 @@ interface CityDocument extends mongoose.Document {
   name: string;
   hospitals: HospitalDocument[];
 }
-
-interface StateDocument extends mongoose.Document {
+// StateDocument
+interface CityStateHospital extends mongoose.Document {
   name: string;
   cities: CityDocument[];
 }
@@ -27,7 +27,7 @@ const citySchema = new mongoose.Schema<CityDocument>({
   hospitals: [hospitalSchema],
 });
 
-const stateSchema = new mongoose.Schema<StateDocument>(
+const stateSchema = new mongoose.Schema<CityStateHospital>(
   {
     name: { type: String, required: true },
     cities: [citySchema],
@@ -37,5 +37,5 @@ const stateSchema = new mongoose.Schema<StateDocument>(
   }
 );
 
-export default mongoose.models.StateDocument ||
-  mongoose.model<StateDocument>("StateDocument", stateSchema);
+export default mongoose.models.CityStateHospital ||
+  mongoose.model<CityStateHospital>("CityStateHospital", stateSchema);
diff --git a/app/models/index.ts b/app/models/index.ts
index db14b46..76765dc 100644
--- a/app/models/index.ts
+++ b/app/models/index.ts
@@ -2,11 +2,11 @@ import BookedAppointment from "./bookedAppointment";
 import CommonDiseases from "./commonDisease";
 import Doctor from "./doctor";
 import Hospital from "./hospital";
-// import MedicalHistory from "./MedicalHistory";
+import MedicalHistory from "./medicalHistory";
 import CityStateHospital from "./citystate_hospitals";
 import Patient from "./patient";
 import Receptionist from "./receptionist";
-// import Transaction from "./Transaction";
+import Transaction from "./transaction";
 import UserLog from "./userLog";
 
 export {
@@ -15,9 +15,9 @@ export {
   Doctor,
   Hospital,
   CityStateHospital,
-  // MedicalHistory,
+  MedicalHistory,
   Patient,
   Receptionist,
-  // Transaction,
+  Transaction,
   UserLog,
 };
diff --git a/app/models/transaction.ts b/app/models/transaction.ts
index 3274d9f..11b4c1c 100644
--- a/app/models/transaction.ts
+++ b/app/models/transaction.ts
@@ -11,28 +11,33 @@ export interface Transaction extends mongoose.Document {
   status: string;
 }
 
-const transactionSchema = new mongoose.Schema({
-  transaction_id: { type: String, required: true, unique: true },
-  timestamp: { type: Date, required: true },
-  patient: {
-    type: mongoose.Schema.Types.ObjectId,
-    ref: "Patient",
-    required: true,
+const transactionSchema = new mongoose.Schema(
+  {
+    transaction_id: { type: String, required: true, unique: true },
+    timestamp: { type: Date, required: true },
+    patient: {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: "Patient",
+      required: true,
+    },
+    hospital: {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: "Hospital",
+      required: true,
+    },
+    disease: { type: String, required: true },
+    description: { type: String, required: true },
+    amount: { type: Number, required: true },
+    status: {
+      type: String,
+      required: true,
+      enum: ["Success", "Failed", "Pending"],
+    },
   },
-  hospital: {
-    type: mongoose.Schema.Types.ObjectId,
-    ref: "Hospital",
-    required: true,
-  },
-  disease: { type: String, required: true },
-  description: { type: String, required: true },
-  amount: { type: Number, required: true },
-  status: {
-    type: String,
-    required: true,
-    enum: ["Success", "Failed", "Pending"],
-  },
-});
+  {
+    collection: "transactions",
+  }
+);
 
 export default mongoose.models.Transaction ||
   mongoose.model<Transaction>("Transaction", transactionSchema);