diff --git a/packages/prescriptionDetailsLambda/src/utils/types.ts b/packages/prescriptionDetailsLambda/src/utils/types.ts
index 7674110ee3..d7bf5c5037 100644
--- a/packages/prescriptionDetailsLambda/src/utils/types.ts
+++ b/packages/prescriptionDetailsLambda/src/utils/types.ts
@@ -84,7 +84,7 @@ export const extensionUrlMappings = {
     "https://fhir.nhs.uk/StructureDefinition/Extension-EPS-TaskBusinessStatus"
   ],
   PRESCRIPTION_STATUS_HISTORY: [
-    "https://fhir.nhs.uk/StructureDefinition/Extension-EPS-PrescriptionStatusHistory"
+    "https://fhir.nhs.uk/StructureDefinition/Extension-DM-PrescriptionStatusHistory"
   ],
   DM_PRESCRIPTION_STATUS_UPDATE_HISTORY: [
     "https://fhir.nhs.uk/StructureDefinition/Extension-DM-PrescriptionStatusHistory"
diff --git a/packages/prescriptionDetailsLambda/tests/test_responseMapper.test.ts b/packages/prescriptionDetailsLambda/tests/test_responseMapper.test.ts
index 238c8d1d10..313323acf9 100644
--- a/packages/prescriptionDetailsLambda/tests/test_responseMapper.test.ts
+++ b/packages/prescriptionDetailsLambda/tests/test_responseMapper.test.ts
@@ -95,7 +95,7 @@ describe("mergePrescriptionDetails", () => {
       authoredOn: "2020-01-01T00:00:00Z",
       extension: [
         {
-          url: "https://fhir.nhs.uk/StructureDefinition/Extension-EPS-PrescriptionStatusHistory",
+          url: "https://fhir.nhs.uk/StructureDefinition/Extension-DM-PrescriptionStatusHistory",
           extension: [
             {url: "status", valueCoding: {
               system: "https://fhir.nhs.uk/CodeSystem/EPS-task-business-status",
@@ -121,7 +121,7 @@ describe("mergePrescriptionDetails", () => {
           ]
         },
         {
-          url: "https://fhir.nhs.uk/StructureDefinition/Extension-EPS-PrescriptionStatusHistory",
+          url: "https://fhir.nhs.uk/StructureDefinition/Extension-DM-PrescriptionStatusHistory",
           extension: [
             {url: "cancellationReason", valueCoding: {
               system: "https://fhir.nhs.uk/CodeSystem/medicationrequest-status-reason",
diff --git a/packages/prescriptionListLambda/src/utils/responseMapper.ts b/packages/prescriptionListLambda/src/utils/responseMapper.ts
index d36c359c22..f876170a90 100644
--- a/packages/prescriptionListLambda/src/utils/responseMapper.ts
+++ b/packages/prescriptionListLambda/src/utils/responseMapper.ts
@@ -98,7 +98,7 @@ export const mapResponseToPrescriptionSummary = (
 
     // Extract status code - fixed to match the structure
     const statusExtension = resource.extension?.find(ext =>
-      ext.url === "https://fhir.nhs.uk/StructureDefinition/Extension-EPS-PrescriptionStatusHistory"
+      ext.url === "https://fhir.nhs.uk/StructureDefinition/Extension-DM-PrescriptionStatusHistory"
     )
     const statusCode = statusExtension?.extension?.find(ext =>
       ext.url === "status"
diff --git a/packages/prescriptionListLambda/tests/mockObjects.ts b/packages/prescriptionListLambda/tests/mockObjects.ts
index 9e8d275bb7..8e9a2d10fb 100644
--- a/packages/prescriptionListLambda/tests/mockObjects.ts
+++ b/packages/prescriptionListLambda/tests/mockObjects.ts
@@ -420,7 +420,7 @@ export const mockPrescriptionBundle: Bundle = {
         },
         extension: [
           {
-            url: "https://fhir.nhs.uk/StructureDefinition/Extension-EPS-PrescriptionStatusHistory",
+            url: "https://fhir.nhs.uk/StructureDefinition/Extension-DM-PrescriptionStatusHistory",
             extension: [{
               url: "status",
               valueCoding: {
diff --git a/packages/prescriptionListLambda/tests/test_responseMapper.test.ts b/packages/prescriptionListLambda/tests/test_responseMapper.test.ts
index 4dcca0447d..f562e9bf6e 100644
--- a/packages/prescriptionListLambda/tests/test_responseMapper.test.ts
+++ b/packages/prescriptionListLambda/tests/test_responseMapper.test.ts
@@ -271,7 +271,7 @@ describe("Response Mapper Tests", () => {
               authoredOn: "20250204000000",
               extension: [
                 {
-                  url: "https://fhir.nhs.uk/StructureDefinition/Extension-EPS-PrescriptionStatusHistory",
+                  url: "https://fhir.nhs.uk/StructureDefinition/Extension-DM-PrescriptionStatusHistory",
                   extension: [{
                     url: "status",
                     valueCoding : {
@@ -329,7 +329,7 @@ describe("Response Mapper Tests", () => {
               authoredOn: "20250204000000",
               extension: [
                 {
-                  url: "https://fhir.nhs.uk/StructureDefinition/Extension-EPS-PrescriptionStatusHistory",
+                  url: "https://fhir.nhs.uk/StructureDefinition/Extension-DM-PrescriptionStatusHistory",
                   extension: [{
                     url: "status",
                     valueCoding : {