diff --git a/src/entity/emr/emr_registration_outpatient.ts b/src/entity/emr/emr_registration_outpatient.ts
index a715e5a..542f99a 100644
--- a/src/entity/emr/emr_registration_outpatient.ts
+++ b/src/entity/emr/emr_registration_outpatient.ts
@@ -8,6 +8,7 @@ import {
     ManyToOne,
     OneToOne,
     JoinColumn,
+    OneToMany,
 } from "typeorm";
 
 import { EmrRegistration } from "./emr_registration";
@@ -38,12 +39,10 @@ export class EmrRegistrationOutpatient {
     @JoinColumn()
     doctor: User;
 
-    /** Jika user pilih dari jadwal dokter, link ke slot tersebut */
     @ManyToOne(() => DoctorSchedule, { onDelete: "SET NULL", nullable: true })
     @JoinColumn()
     doctor_schedule: DoctorSchedule | null;
 
-    /** Contoh: "08:00-12:00" atau "Pagi" */
     @Column({ nullable: true, length: 64 })
     practice_hour: string;
 
@@ -62,6 +61,10 @@ export class EmrRegistrationOutpatient {
     @Column({ nullable: true, length: 256 })
     registration_number: string;
 
+    @ManyToOne(() => EmrRegistrationOutpatient, { onDelete: "SET NULL", nullable: true })
+    @JoinColumn()
+    appointment_id: EmrRegistrationOutpatient | null;
+
     @Column()
     @CreateDateColumn()
     created_at: Date;