diff --git a/tests/facility/patient/encounter/encounterFormHelpers.ts b/tests/facility/patient/encounter/encounterFormHelpers.ts
new file mode 100644
index 00000000000..6b295630b5e
--- /dev/null
+++ b/tests/facility/patient/encounter/encounterFormHelpers.ts
@@ -0,0 +1,53 @@
+import { faker } from "@faker-js/faker";
+import { expect, type Page } from "@playwright/test";
+import { ENCOUNTER_CLASSES } from "tests/facility/patient/encounter/encounterClasses";
+import { getFacilityId } from "tests/support/facilityId";
+import { getPatientId } from "tests/support/patientId";
+
+export async function openCreateEncounterDialog(page: Page) {
+  const facilityId = getFacilityId();
+  const patientId = getPatientId();
+
+  await page.goto(`/facility/${facilityId}/patient/${patientId}`);
+  await page.getByRole("link", { name: "Patient Home" }).click();
+
+  await expect(
+    page.getByRole("button", { name: "Create Encounter" }),
+  ).toBeVisible();
+  await page.getByRole("button", { name: "Create Encounter" }).click();
+}
+
+export async function selectRandomEncounterClass(page: Page) {
+  const randomClass = faker.helpers.arrayElement(ENCOUNTER_CLASSES);
+  await page.getByRole("button", { name: randomClass }).click();
+}
+
+export async function selectStatusInCreateDialog(page: Page, status: string) {
+  await page.getByRole("combobox", { name: "Status" }).click();
+  await page.getByRole("option", { name: status, exact: true }).click();
+}
+
+export async function openCalendarAndGetNextMonthButton(page: Page) {
+  await page
+    .locator('[data-slot="form-item"]')
+    .filter({ hasText: "Date and Time" })
+    .locator('[data-slot="popover-trigger"]')
+    .click();
+
+  const nextMonthButton = page.getByRole("button", {
+    name: "Go to the Next Month",
+  });
+  await expect(nextMonthButton).toBeVisible();
+  return nextMonthButton;
+}
+
+export function getFutureDateButtonFromCalendar(page: Page) {
+  return page
+    .getByRole("gridcell")
+    .filter({ hasText: /^15$/ })
+    .getByRole("button");
+}
+
+export function getEncounterCreateDialog(page: Page) {
+  return page.getByRole("dialog", { name: "Initiate Patient Encounter" });
+}
diff --git a/tests/facility/patient/encounter/encounterFutureDateRestriction.spec.ts b/tests/facility/patient/encounter/encounterFutureDateRestriction.spec.ts
index b1642741535..420a85f3350 100644
--- a/tests/facility/patient/encounter/encounterFutureDateRestriction.spec.ts
+++ b/tests/facility/patient/encounter/encounterFutureDateRestriction.spec.ts
@@ -1,57 +1,17 @@
-import { faker } from "@faker-js/faker";
-import { expect, test, type Page } from "@playwright/test";
-import { ENCOUNTER_CLASSES } from "tests/facility/patient/encounter/encounterClasses";
-import { getFacilityId } from "tests/support/facilityId";
-import { getPatientId } from "tests/support/patientId";
+import { expect, test } from "@playwright/test";
+import {
+  getEncounterCreateDialog as getEncounterDialog,
+  getFutureDateButtonFromCalendar,
+  openCalendarAndGetNextMonthButton,
+  openCreateEncounterDialog,
+  selectRandomEncounterClass,
+} from "tests/facility/patient/encounter/encounterFormHelpers";
 
 test.use({ storageState: "tests/.auth/user.json" });
 
-async function openEncounterForm(page: Page) {
-  const facilityId = getFacilityId();
-  const patientId = getPatientId();
-
-  await page.goto(`/facility/${facilityId}/patient/${patientId}`);
-  await page.getByRole("link", { name: "Patient Home" }).click();
-
-  await expect(
-    page.getByRole("button", { name: "Create Encounter" }),
-  ).toBeVisible();
-  await page.getByRole("button", { name: "Create Encounter" }).click();
-}
-
-async function selectRandomEncounterClass(page: Page) {
-  const randomClass = faker.helpers.arrayElement(ENCOUNTER_CLASSES);
-  await page.getByRole("button", { name: randomClass }).click();
-}
-
-async function openCalendarAndGetNextMonthButton(page: Page) {
-  await page
-    .locator('[data-slot="form-item"]')
-    .filter({ hasText: "Date and Time" })
-    .locator('[data-slot="popover-trigger"]')
-    .click();
-
-  const nextMonthButton = page.getByRole("button", {
-    name: "Go to the Next Month",
-  });
-  await expect(nextMonthButton).toBeVisible();
-  return nextMonthButton;
-}
-
-function getFutureDateButtonFromCalendar(page: Page) {
-  return page
-    .getByRole("gridcell")
-    .filter({ hasText: /^15$/ })
-    .getByRole("button");
-}
-
-function getEncounterDialog(page: Page) {
-  return page.getByRole("dialog", { name: "Initiate Patient Encounter" });
-}
-
 test.describe("Encounter Future Date Restriction", () => {
   test.beforeEach(async ({ page }) => {
-    await openEncounterForm(page);
+    await openCreateEncounterDialog(page);
   });
 
   test("should disable future dates when status is In Progress", async ({
diff --git a/tests/facility/patient/encounter/encounterPlannedStatusTransition.spec.ts b/tests/facility/patient/encounter/encounterPlannedStatusTransition.spec.ts
new file mode 100644
index 00000000000..c4944d0d173
--- /dev/null
+++ b/tests/facility/patient/encounter/encounterPlannedStatusTransition.spec.ts
@@ -0,0 +1,189 @@
+import { expect, test, type Page } from "@playwright/test";
+import {
+  getEncounterCreateDialog,
+  getFutureDateButtonFromCalendar,
+  openCalendarAndGetNextMonthButton,
+  openCreateEncounterDialog,
+  selectRandomEncounterClass,
+  selectStatusInCreateDialog,
+} from "tests/facility/patient/encounter/encounterFormHelpers";
+
+test.use({ storageState: "tests/.auth/user.json" });
+
+const VALIDATION_ERROR_TEXT =
+  "period: Value error, Start Date cannot be greater than End Date";
+
+async function selectFutureDateInCalendar(page: Page) {
+  const nextMonthButton = await openCalendarAndGetNextMonthButton(page);
+  await expect(nextMonthButton).toBeEnabled();
+  await nextMonthButton.click();
+
+  const futureDayButton = getFutureDateButtonFromCalendar(page);
+  await expect(futureDayButton).toBeEnabled();
+  await futureDayButton.click();
+}
+
+async function createPlannedEncounterWithFutureDate(page: Page) {
+  await openCreateEncounterDialog(page);
+  await selectRandomEncounterClass(page);
+  await selectStatusInCreateDialog(page, "Planned");
+  await selectFutureDateInCalendar(page);
+
+  const dialog = getEncounterCreateDialog(page);
+  await dialog.getByRole("button", { name: /^Create Encounter/ }).click();
+
+  // Submit navigates to the encounter detail page.
+  await page.waitForURL(/\/encounter\/[^/]+/);
+  await expect(
+    page.getByRole("button", { name: "Encounter Actions" }),
+  ).toBeVisible();
+}
+
+// Update-encounter form uses a bare <Label> + <SelectTrigger> (no FormLabel/htmlFor),
+// so the combobox has no programmatic accessible name. Anchor on the label and walk
+// to its immediate parent (the space-y-2 wrapper that contains exactly one combobox).
+function encounterStatusCombobox(page: Page) {
+  return page
+    .locator('label[data-slot="label"]')
+    .filter({ hasText: /^Encounter Status$/ })
+    .locator("xpath=..")
+    .getByRole("combobox");
+}
+
+async function openEncounterUpdateForm(page: Page) {
+  await page.getByRole("tab", { name: "Details" }).click();
+  await page.getByRole("link", { name: "Update Encounter" }).click();
+  await expect(encounterStatusCombobox(page)).toBeVisible();
+}
+
+async function changeStatus(page: Page, status: string) {
+  await encounterStatusCombobox(page).click();
+  await page.getByRole("option", { name: status, exact: true }).click();
+}
+
+async function submitQuestionnaire(page: Page) {
+  await page.getByRole("button", { name: "Submit", exact: true }).click();
+}
+
+async function expectSubmissionSuccess(page: Page) {
+  await expect(
+    page.getByText("Questionnaire submitted successfully"),
+  ).toBeVisible();
+}
+
+async function expectSubmissionBlockedByPeriodError(page: Page) {
+  await expect(page.getByText("Failed to submit questionnaire")).toBeVisible();
+  await expect(page.getByText(VALIDATION_ERROR_TEXT)).toBeVisible();
+}
+
+// Ensures the encounter ends in a terminal state so the patient's 5-live-encounter
+// limit isn't reached across repeated runs.
+async function cancelEncounterFromCurrentForm(page: Page) {
+  await changeStatus(page, "Cancelled");
+  await submitQuestionnaire(page);
+  await expectSubmissionSuccess(page);
+}
+
+test.describe("Planned Encounter Status Transition", () => {
+  test.beforeEach(async ({ page }) => {
+    await createPlannedEncounterWithFutureDate(page);
+  });
+
+  test("allows transition from Planned to In Progress", async ({ page }) => {
+    await test.step("Open update form", async () => {
+      await openEncounterUpdateForm(page);
+    });
+
+    await test.step("Transition Planned to In Progress", async () => {
+      await changeStatus(page, "In Progress");
+      await submitQuestionnaire(page);
+      await expectSubmissionSuccess(page);
+    });
+
+    await test.step("Cleanup: cancel encounter", async () => {
+      await openEncounterUpdateForm(page);
+      await cancelEncounterFromCurrentForm(page);
+    });
+  });
+
+  test("allows transition from Planned to On Hold", async ({ page }) => {
+    await test.step("Open update form", async () => {
+      await openEncounterUpdateForm(page);
+    });
+
+    await test.step("Transition Planned to On Hold", async () => {
+      await changeStatus(page, "On Hold");
+      await submitQuestionnaire(page);
+      await expectSubmissionSuccess(page);
+    });
+
+    await test.step("Cleanup: cancel encounter", async () => {
+      await openEncounterUpdateForm(page);
+      await cancelEncounterFromCurrentForm(page);
+    });
+  });
+
+  test("allows transition from Planned to Cancelled", async ({ page }) => {
+    await test.step("Open update form", async () => {
+      await openEncounterUpdateForm(page);
+    });
+
+    await test.step("Transition Planned to Cancelled", async () => {
+      await cancelEncounterFromCurrentForm(page);
+    });
+  });
+
+  test("allows transition from Planned to Entered in error", async ({
+    page,
+  }) => {
+    await test.step("Open update form", async () => {
+      await openEncounterUpdateForm(page);
+    });
+
+    await test.step("Transition Planned to Entered in error", async () => {
+      await changeStatus(page, "Entered in error");
+      await submitQuestionnaire(page);
+      await expectSubmissionSuccess(page);
+    });
+  });
+
+  test("blocks transition from Planned to Completed with period error", async ({
+    page,
+  }) => {
+    await test.step("Open update form", async () => {
+      await openEncounterUpdateForm(page);
+    });
+
+    await test.step("Attempt Planned to Completed", async () => {
+      await changeStatus(page, "Completed");
+      await submitQuestionnaire(page);
+      await expectSubmissionBlockedByPeriodError(page);
+    });
+
+    await test.step("Cleanup: cancel encounter (still Planned on backend)", async () => {
+      // Backend rejected the transition, so the encounter is still Planned.
+      // Selecting Cancelled clears the auto-set end date (see EncounterQuestion
+      // useEffect handling for future-start Cancelled/EnteredInError), so this
+      // submit succeeds and moves the encounter to a terminal state.
+      await cancelEncounterFromCurrentForm(page);
+    });
+  });
+
+  test("blocks transition from Planned to Discontinued with period error", async ({
+    page,
+  }) => {
+    await test.step("Open update form", async () => {
+      await openEncounterUpdateForm(page);
+    });
+
+    await test.step("Attempt Planned to Discontinued", async () => {
+      await changeStatus(page, "Discontinued");
+      await submitQuestionnaire(page);
+      await expectSubmissionBlockedByPeriodError(page);
+    });
+
+    await test.step("Cleanup: cancel encounter (still Planned on backend)", async () => {
+      await cancelEncounterFromCurrentForm(page);
+    });
+  });
+});