diff --git a/internal/domain/main-entities/chemo/dto.go b/internal/domain/main-entities/chemo/dto.go
new file mode 100644
index 00000000..cf01b8ad
--- /dev/null
+++ b/internal/domain/main-entities/chemo/dto.go
@@ -0,0 +1,86 @@
+package chemo
+
+import (
+	ecore "simrs-vx/internal/domain/base-entities/core"
+	ee "simrs-vx/internal/domain/main-entities/encounter"
+	eun "simrs-vx/internal/domain/main-entities/unit"
+	eus "simrs-vx/internal/domain/main-entities/user"
+	"time"
+
+	erc "simrs-vx/internal/domain/references/common"
+)
+
+type CreateDto struct {
+	Encounter_Id       *uint              `json:"encounter_id"`
+	Status_Code        erc.DataStatusCode `json:"status_code"`
+	VerifiedBy_User_Id *uint              `json:"verifiedBy_user_id"`
+	SrcUnit_Id         *uint              `json:"src_unit_id"`
+}
+
+type ReadListDto struct {
+	FilterDto
+	Includes   string   `json:"includes"`
+	Preloads   []string `json:"-"`
+	Pagination ecore.Pagination
+}
+
+type FilterDto struct {
+	Encounter_Id       *uint                 `json:"encounter_id"`
+	Status_Code        *erc.DataVerifiedCode `json:"status_code"`
+	VerifiedBy_User_Id *uint                 `json:"verifiedBy_user_id"`
+	SrcUnit_Id         *uint                 `json:"src_unit_id"`
+}
+
+type ReadDetailDto struct {
+	Id uint16 `json:"id"`
+}
+
+type UpdateDto struct {
+	Id uint16 `json:"id"`
+	CreateDto
+}
+
+type DeleteDto struct {
+	Id uint16 `json:"id"`
+}
+
+type MetaDto struct {
+	PageNumber int `json:"page_number"`
+	PageSize   int `json:"page_size"`
+	Count      int `json:"count"`
+}
+
+type ResponseDto struct {
+	ecore.Main
+	Encounter_Id       *uint                `json:"encounter_id"`
+	Encounter          *ee.Encounter        `json:"encounter,omitempty"`
+	Status_Code        erc.DataVerifiedCode `json:"status_code"`
+	VerifiedAt         *time.Time           `json:"verifiedAt"`
+	VerifiedBy_User_Id *uint                `json:"verifiedBy_user_id"`
+	VerifiedBy         *eus.User            `json:"verifiedBy,omitempty"`
+	SrcUnit_Id         *uint                `json:"src_unit_id"`
+	SrcUnit            *eun.Unit            `json:"src_unit,omitempty"`
+}
+
+func (d Chemo) ToResponse() ResponseDto {
+	resp := ResponseDto{
+		Encounter_Id:       d.Encounter_Id,
+		Encounter:          d.Encounter,
+		Status_Code:        d.Status_Code,
+		VerifiedAt:         d.VerifiedAt,
+		VerifiedBy_User_Id: d.VerifiedBy_User_Id,
+		VerifiedBy:         d.VerifiedBy,
+		SrcUnit_Id:         d.SrcUnit_Id,
+		SrcUnit:            d.SrcUnit,
+	}
+	resp.Main = d.Main
+	return resp
+}
+
+func ToResponseList(data []Chemo) []ResponseDto {
+	resp := make([]ResponseDto, len(data))
+	for i, u := range data {
+		resp[i] = u.ToResponse()
+	}
+	return resp
+}
diff --git a/internal/domain/main-entities/chemo/entity.go b/internal/domain/main-entities/chemo/entity.go
new file mode 100644
index 00000000..2ba83990
--- /dev/null
+++ b/internal/domain/main-entities/chemo/entity.go
@@ -0,0 +1,24 @@
+package chemo
+
+import (
+	"time"
+
+	ecore "simrs-vx/internal/domain/base-entities/core"
+	ee "simrs-vx/internal/domain/main-entities/encounter"
+	eun "simrs-vx/internal/domain/main-entities/unit"
+	eus "simrs-vx/internal/domain/main-entities/user"
+
+	erc "simrs-vx/internal/domain/references/common"
+)
+
+type Chemo struct {
+	ecore.Main                              // adjust this according to the needs
+	Encounter_Id       *uint                `json:"encounter_id"`
+	Encounter          *ee.Encounter        `json:"encounter,omitempty" gorm:"foreignKey:Encounter_Id;references:Id"`
+	Status_Code        erc.DataVerifiedCode `json:"status_code"`
+	VerifiedAt         *time.Time           `json:"verifiedAt"`
+	VerifiedBy_User_Id *uint                `json:"verifiedBy_user_id"`
+	VerifiedBy         *eus.User            `json:"verifiedBy,omitempty" gorm:"foreignKey:VerifiedBy_User_Id;references:Id"`
+	SrcUnit_Id         *uint                `json:"src_unit_id"`
+	SrcUnit            *eun.Unit            `json:"src_unit,omitempty" gorm:"foreignKey:SrcUnit_Id;references:Id"`
+}