diff --git a/src/entity/emr/emr_registration_outpatient.ts b/src/entity/emr/emr_registration_outpatient.ts
index cbb5f1b..ea35f6d 100644
--- a/src/entity/emr/emr_registration_outpatient.ts
+++ b/src/entity/emr/emr_registration_outpatient.ts
@@ -79,6 +79,10 @@ export class EmrRegistrationOutpatient {
     @JoinColumn()
     ref_consultation: EmrInternalConsultation | null;
 
+    @ManyToOne(() => EmrRegistration, { onDelete: "SET NULL", nullable: true })
+    @JoinColumn({ name: "ref_appointment_id" })
+    ref_appointment: EmrRegistration;
+
     @Column({ nullable: true })
     queued_at?: Date;