diff --git a/internal/domain/main-entities/patient/entity.go b/internal/domain/main-entities/patient/entity.go
index 27d3c8ba..83afa6ce 100644
--- a/internal/domain/main-entities/patient/entity.go
+++ b/internal/domain/main-entities/patient/entity.go
@@ -16,4 +16,6 @@ type Patient struct {
 	RegisteredBy_User_Name *string              `json:"registeredBy_user_name" gorm:"size:100"`
 	Status_Code            erc.ActiveStatusCode `json:"status_code" gorm:"not null;size:10"`
 	Number                 *string              `json:"number" gorm:"unique;size:15"`
+	Parent_Number          *string              `json:"parent_number"`
+	Parent                 *Patient             `json:"parent,omitempty" gorm:"foreignKey:Parent_Number;references:Number"`
 }