diff --git a/backend/src/BigRegister.Api/Contracts/Mappers.cs b/backend/src/BigRegister.Api/Contracts/Mappers.cs
index 17ea939..dc26083 100644
--- a/backend/src/BigRegister.Api/Contracts/Mappers.cs
+++ b/backend/src/BigRegister.Api/Contracts/Mappers.cs
@@ -40,15 +40,18 @@ public static class Mappers
   // Goedgekeurd once past the processing window, else In behandeling; a manual case
   // stays In behandeling forever (awaits the unbuilt backoffice). Pure — testable
   // by passing different `now` values without waiting for the wall clock.
+  //
+  // Ingediend/MeerInfoGevraagd (AanvraagStatusTag, WP-63) aren't produced here yet — no
+  // behandelaar action exists to reach them (WP-65 adds the transition endpoint).
   public static AanvraagStatusDto ToStatusDto(this Aanvraag a, DateTimeOffset now)
   {
     if (!a.Submitted)
       return new("Concept", StepIndex: a.StepIndex, StepCount: a.StepCount);
     if (a.Reden is not null)
-      return new("Afgewezen", Referentie: a.Referentie, Reden: a.Reden);
+      return new(AanvraagStatusTag.Afgewezen.ToString(), Referentie: a.Referentie, Reden: a.Reden);
     if (a.AutoApprovable && now > a.SubmittedAt!.Value + ApplicationStore.ProcessingWindow)
-      return new("Goedgekeurd", Referentie: a.Referentie);
-    return new("InBehandeling", Referentie: a.Referentie, Manual: !a.AutoApprovable);
+      return new(AanvraagStatusTag.Goedgekeurd.ToString(), Referentie: a.Referentie);
+    return new(AanvraagStatusTag.InBehandeling.ToString(), Referentie: a.Referentie, Manual: !a.AutoApprovable);
   }
 
   public static ApplicationSummaryDto ToSummaryDto(this Aanvraag a, DateTimeOffset now) => new(
diff --git a/backend/src/BigRegister.Api/Data/ApplicationStore.cs b/backend/src/BigRegister.Api/Data/ApplicationStore.cs
index b8e291e..d778e98 100644
--- a/backend/src/BigRegister.Api/Data/ApplicationStore.cs
+++ b/backend/src/BigRegister.Api/Data/ApplicationStore.cs
@@ -3,6 +3,16 @@ using BigRegister.Domain.Submissions;
 
 namespace BigRegister.Api.Data;
 
+/// <summary>
+/// The post-submission aanvraag status lifecycle (ADR-0002, WP-63): Ingediend → In
+/// behandeling → (Meer info gevraagd ⇄) → Goedgekeurd/Afgewezen. Concept (pre-submission,
+/// the wizard draft) isn't part of this enum — see <see cref="Aanvraag.Submitted"/>.
+/// <see cref="Ingediend"/> and <see cref="MeerInfoGevraagd"/> are not reachable yet: no
+/// endpoint sets them (that's WP-65's behandelaar-facing mutation) — modelled here so the
+/// contract is ready when it does.
+/// </summary>
+public enum AanvraagStatusTag { Ingediend, InBehandeling, MeerInfoGevraagd, Goedgekeurd, Afgewezen }
+
 /// <summary>
 /// An application (aanvraag) — the system of record the dashboard reads. A wizard
 /// creates one as a Concept on its first step, syncs its draft snapshot per step,
diff --git a/backend/tests/BigRegister.Tests/ApplicationTests.cs b/backend/tests/BigRegister.Tests/ApplicationTests.cs
index 65638ac..7a773b9 100644
--- a/backend/tests/BigRegister.Tests/ApplicationTests.cs
+++ b/backend/tests/BigRegister.Tests/ApplicationTests.cs
@@ -205,4 +205,15 @@ public class ApplicationTests(TestWebApplicationFactory factory) : IClassFixture
     Assert.Equal("InBehandeling", status.Tag);
     Assert.True(status.Manual);
   }
+
+  // WP-63: the published lifecycle (ADR-0002) must name exactly these five tags, in this
+  // order — ToStatusDto's string literals must keep matching Enum.ToString(), and Ingediend/
+  // MeerInfoGevraagd (unreachable until WP-65 adds the behandelaar transition) stay defined.
+  [Fact]
+  public void AanvraagStatusTag_covers_the_published_lifecycle()
+  {
+    Assert.Equal(
+        new[] { "Ingediend", "InBehandeling", "MeerInfoGevraagd", "Goedgekeurd", "Afgewezen" },
+        Enum.GetNames<AanvraagStatusTag>());
+  }
 }
diff --git a/docs/project/backlog/README.md b/docs/project/backlog/README.md
index b9bfc9c..4db7d6d 100644
--- a/docs/project/backlog/README.md
+++ b/docs/project/backlog/README.md
@@ -113,7 +113,7 @@ for its existing violations, so every WP ends green.
 | [WP-60](WP-60-write-divergence-resilience.md)          | Write-divergence resilience (local + ZGW writes)                                   | 10 · OpenZaak hardening     | done   |
 | [WP-61](WP-61-behandelportal-bootstrap.md)             | Bootstrap the behandelportal app                                                   | 11 · Behandelportal         | done   |
 | [WP-62](WP-62-medewerker-identity-authz.md)            | Backend: medewerker caller identity + authz seam                                   | 11 · Behandelportal         | done   |
-| [WP-63](WP-63-aanvraag-status-lifecycle.md)            | Backend: aanvraag status lifecycle as a published DTO                              | 11 · Behandelportal         | todo   |
+| [WP-63](WP-63-aanvraag-status-lifecycle.md)            | Backend: aanvraag status lifecycle as a published DTO                              | 11 · Behandelportal         | done   |
 | [WP-64](WP-64-behandelportal-werkvoorraad.md)          | Behandelportal: werkvoorraad (queue) screen                                        | 11 · Behandelportal         | todo   |
 | [WP-65](WP-65-behandelportal-beoordeling.md)           | Behandelportal: zaak detail + beoordeling (decision) screen                        | 11 · Behandelportal         | todo   |
 | [WP-66](WP-66-behandelportal-openzaak-write.md)        | Wire the decision into OpenZaak                                                    | 11 · Behandelportal         | todo   |
diff --git a/docs/project/backlog/WP-63-aanvraag-status-lifecycle.md b/docs/project/backlog/WP-63-aanvraag-status-lifecycle.md
index fb8dba8..1d3bfe0 100644
--- a/docs/project/backlog/WP-63-aanvraag-status-lifecycle.md
+++ b/docs/project/backlog/WP-63-aanvraag-status-lifecycle.md
@@ -1,6 +1,6 @@
 # WP-63 — Backend: aanvraag status lifecycle as a published DTO
 
-Status: todo
+Status: done
 Phase: 11 — Behandelportal
 
 ## Why
@@ -48,10 +48,27 @@ read (this WP), the behandelportal needs it as the thing it advances (WP-65).
 
 ## Acceptance criteria
 
-- [ ] Backend publishes the full status lifecycle value on the existing aanvraag DTO.
-- [ ] `npm run gen:api` leaves no drift; SSP's existing "pending" display is unchanged in
+- [x] Backend publishes the full status lifecycle value on the existing aanvraag DTO.
+- [x] `npm run gen:api` leaves no drift; SSP's existing "pending" display is unchanged in
       behavior, now backed by the real status.
-- [ ] `dotnet test` + `npm run ci` green.
+- [x] `dotnet test` + `npm run ci` green.
+
+## Outcome
+
+Implemented as a pure type-system widening, not a behavior change: `AanvraagStatusTag`
+(`Ingediend | InBehandeling | MeerInfoGevraagd | Goedgekeurd | Afgewezen`) is a new C# enum
+backing `Mappers.ToStatusDto`'s existing string literals — `AanvraagStatusDto.Tag` stays a
+plain string, so the OpenAPI schema (and `npm run gen:api`) don't change at all, satisfying
+"zero required FE behavior change" trivially. `Ingediend`/`MeerInfoGevraagd` aren't reachable
+from any code path yet (no behandelaar action exists to produce them) — that's WP-65's
+transition endpoint, exactly per this WP's own Risks note. The FE `AanvraagStatus` union,
+`parseAanvraagStatus`, `statusLabel`/`submittedRow`/`detailRows`, `blockActions`, and the
+dashboard's sort order were all widened to the two new tags so TypeScript's exhaustiveness
+checking forces every switch to handle them once WP-65 starts emitting them.
+`big-profile.store.ts`'s `pendingHerregistratie` was deliberately left untouched — it's a
+pure client-side optimistic UI flag unrelated to any DTO field (not what the WP's "Why"
+section implied), and the decision text's "or kept as a computed convenience" explicitly
+allows this.
 
 ## Verification
 
diff --git a/src/app/registratie/domain/aanvraag-view.spec.ts b/src/app/registratie/domain/aanvraag-view.spec.ts
index 8899f1c..8a7d3e9 100644
--- a/src/app/registratie/domain/aanvraag-view.spec.ts
+++ b/src/app/registratie/domain/aanvraag-view.spec.ts
@@ -45,6 +45,14 @@ describe('submittedRow', () => {
     } as Aanvraag);
     expect(rejected.status).toContain('Onvoldoende uren');
   });
+
+  it('meer-info-gevraagd adds its reason, like a rejection', () => {
+    const row = submittedRow({
+      ...base,
+      status: { tag: 'MeerInfoGevraagd', referentie: 'R3', reden: 'Diploma ontbreekt' },
+    } as Aanvraag);
+    expect(row.status).toContain('Diploma ontbreekt');
+  });
 });
 
 describe('detailRows', () => {
diff --git a/src/app/registratie/domain/aanvraag-view.ts b/src/app/registratie/domain/aanvraag-view.ts
index f8c75d5..bcf26bc 100644
--- a/src/app/registratie/domain/aanvraag-view.ts
+++ b/src/app/registratie/domain/aanvraag-view.ts
@@ -28,8 +28,12 @@ export function statusLabel(status: AanvraagStatus): string {
   switch (status.tag) {
     case 'Concept':
       return $localize`:@@aanvraag.status.concept:Concept (nog niet ingediend)`;
+    case 'Ingediend':
+      return $localize`:@@aanvraag.status.ingediend:Ingediend`;
     case 'InBehandeling':
       return $localize`:@@aanvraag.status.inBehandeling:In behandeling`;
+    case 'MeerInfoGevraagd':
+      return $localize`:@@aanvraag.status.meerInfoGevraagd:Meer informatie gevraagd`;
     case 'Goedgekeurd':
       return $localize`:@@aanvraag.status.goedgekeurd:Goedgekeurd`;
     case 'Afgewezen':
@@ -65,7 +69,7 @@ export function submittedRow(a: Aanvraag): AanvraagRow {
     parts.push(
       $localize`:@@aanvraagBlock.manual:Uw aanvraag wordt handmatig beoordeeld in de backoffice.`,
     );
-  if (s.tag === 'Afgewezen') parts.push(s.reden);
+  if (s.tag === 'Afgewezen' || s.tag === 'MeerInfoGevraagd') parts.push(s.reden);
   return {
     heading: TYPE_LABELS[a.type],
     subtitle: purposeLabel(a.type),
@@ -94,5 +98,11 @@ export function detailRows(a: Aanvraag): { key: string; value: string }[] {
       value: a.status.reden,
     });
   }
+  if (a.status.tag === 'MeerInfoGevraagd') {
+    rows.push({
+      key: $localize`:@@aanvraag.detail.meerInfoReden:Gevraagde informatie`,
+      value: a.status.reden,
+    });
+  }
   return rows;
 }
diff --git a/src/app/registratie/domain/aanvraag.ts b/src/app/registratie/domain/aanvraag.ts
index 8d38baa..7e906ae 100644
--- a/src/app/registratie/domain/aanvraag.ts
+++ b/src/app/registratie/domain/aanvraag.ts
@@ -10,9 +10,14 @@
  */
 export type AanvraagType = 'registratie' | 'herregistratie' | 'intake';
 
+// Ingediend/MeerInfoGevraagd (ADR-0002/WP-63) are widened into the union so the parse
+// boundary + renderers are ready, but no backend path emits them yet — that's WP-65's
+// behandelaar-facing transition endpoint.
 export type AanvraagStatus =
   | { tag: 'Concept'; stepIndex: number; stepCount: number }
+  | { tag: 'Ingediend'; referentie: string }
   | { tag: 'InBehandeling'; referentie: string; manual: boolean } // manual=true → "wordt handmatig beoordeeld"
+  | { tag: 'MeerInfoGevraagd'; referentie: string; reden: string }
   | { tag: 'Goedgekeurd'; referentie: string }
   | { tag: 'Afgewezen'; referentie: string; reden: string };
 
diff --git a/src/app/registratie/domain/block-actions.spec.ts b/src/app/registratie/domain/block-actions.spec.ts
index f312ad8..7996ba3 100644
--- a/src/app/registratie/domain/block-actions.spec.ts
+++ b/src/app/registratie/domain/block-actions.spec.ts
@@ -15,6 +15,13 @@ describe('blockActions', () => {
     ]);
   });
 
+  it('ingediend and meer-info-gevraagd behave like in-behandeling', () => {
+    expect(blockActions({ tag: 'Ingediend', referentie: 'BIG-1' })).toEqual(['viewDocuments']);
+    expect(blockActions({ tag: 'MeerInfoGevraagd', referentie: 'BIG-1', reden: 'x' })).toEqual([
+      'viewDocuments',
+    ]);
+  });
+
   it('resolved aanvragen have no actions', () => {
     expect(blockActions({ tag: 'Goedgekeurd', referentie: 'BIG-1' })).toEqual([]);
     expect(blockActions({ tag: 'Afgewezen', referentie: 'BIG-1', reden: 'x' })).toEqual([]);
diff --git a/src/app/registratie/domain/block-actions.ts b/src/app/registratie/domain/block-actions.ts
index 457a2b6..3d40891 100644
--- a/src/app/registratie/domain/block-actions.ts
+++ b/src/app/registratie/domain/block-actions.ts
@@ -9,7 +9,9 @@ export function blockActions(status: AanvraagStatus): BlockAction[] {
   switch (status.tag) {
     case 'Concept':
       return ['resume', 'cancel'];
+    case 'Ingediend':
     case 'InBehandeling':
+    case 'MeerInfoGevraagd':
       return ['viewDocuments'];
     case 'Goedgekeurd':
     case 'Afgewezen':
diff --git a/src/app/registratie/infrastructure/applications.adapter.spec.ts b/src/app/registratie/infrastructure/applications.adapter.spec.ts
index 4fe25fb..29b7683 100644
--- a/src/app/registratie/infrastructure/applications.adapter.spec.ts
+++ b/src/app/registratie/infrastructure/applications.adapter.spec.ts
@@ -21,9 +21,13 @@ describe('parseAanvraagStatus', () => {
       ok: true,
       value: { tag: 'Concept', stepIndex: 2, stepCount: 4 },
     });
+    expect(parseAanvraagStatus({ tag: 'Ingediend', referentie: 'BIG-1' }).ok).toBe(true);
     expect(
       parseAanvraagStatus({ tag: 'InBehandeling', referentie: 'BIG-1', manual: true }).ok,
     ).toBe(true);
+    expect(
+      parseAanvraagStatus({ tag: 'MeerInfoGevraagd', referentie: 'BIG-1', reden: 'diploma?' }).ok,
+    ).toBe(true);
     expect(parseAanvraagStatus({ tag: 'Goedgekeurd', referentie: 'BIG-1' }).ok).toBe(true);
     expect(
       parseAanvraagStatus({ tag: 'Afgewezen', referentie: 'BIG-1', reden: 'geen uren' }).ok,
diff --git a/src/app/registratie/infrastructure/applications.adapter.ts b/src/app/registratie/infrastructure/applications.adapter.ts
index 0ae4ebe..2e8d9d8 100644
--- a/src/app/registratie/infrastructure/applications.adapter.ts
+++ b/src/app/registratie/infrastructure/applications.adapter.ts
@@ -78,10 +78,17 @@ export function parseAanvraagStatus(
       if (typeof s.stepIndex !== 'number' || typeof s.stepCount !== 'number')
         return err('aanvraag: bad Concept status');
       return ok({ tag: 'Concept', stepIndex: s.stepIndex, stepCount: s.stepCount });
+    case 'Ingediend':
+      if (typeof s.referentie !== 'string') return err('aanvraag: bad Ingediend status');
+      return ok({ tag: 'Ingediend', referentie: s.referentie });
     case 'InBehandeling':
       if (typeof s.referentie !== 'string' || typeof s.manual !== 'boolean')
         return err('aanvraag: bad InBehandeling status');
       return ok({ tag: 'InBehandeling', referentie: s.referentie, manual: s.manual });
+    case 'MeerInfoGevraagd':
+      if (typeof s.referentie !== 'string' || typeof s.reden !== 'string')
+        return err('aanvraag: bad MeerInfoGevraagd status');
+      return ok({ tag: 'MeerInfoGevraagd', referentie: s.referentie, reden: s.reden });
     case 'Goedgekeurd':
       if (typeof s.referentie !== 'string') return err('aanvraag: bad Goedgekeurd status');
       return ok({ tag: 'Goedgekeurd', referentie: s.referentie });
diff --git a/src/app/registratie/ui/dashboard.page.ts b/src/app/registratie/ui/dashboard.page.ts
index 1b675ac..5b2cc82 100644
--- a/src/app/registratie/ui/dashboard.page.ts
+++ b/src/app/registratie/ui/dashboard.page.ts
@@ -236,7 +236,9 @@ export class DashboardPage {
     if (rd.tag !== 'Success') return [];
     const order: Record<Aanvraag['status']['tag'], number> = {
       Concept: 0,
+      Ingediend: 1,
       InBehandeling: 1,
+      MeerInfoGevraagd: 1,
       Goedgekeurd: 2,
       Afgewezen: 2,
     };
diff --git a/src/locale/messages.en.xlf b/src/locale/messages.en.xlf
index 0344a8f..9860f45 100644
--- a/src/locale/messages.en.xlf
+++ b/src/locale/messages.en.xlf
@@ -1006,12 +1006,28 @@
           <context context-type="linenumber">30</context>
         </context-group>
       </trans-unit>
+      <trans-unit id="aanvraag.status.ingediend" datatype="html">
+        <source>Ingediend</source>
+        <target datatype="html">Submitted</target>
+        <context-group purpose="location">
+          <context context-type="sourcefile">src/app/registratie/domain/aanvraag-view.ts</context>
+          <context context-type="linenumber">32</context>
+        </context-group>
+      </trans-unit>
       <trans-unit id="aanvraag.status.inBehandeling" datatype="html">
         <source>In behandeling</source>
         <target datatype="html">In progress</target>
         <context-group purpose="location">
           <context context-type="sourcefile">src/app/registratie/domain/aanvraag-view.ts</context>
-          <context context-type="linenumber">32</context>
+          <context context-type="linenumber">34</context>
+        </context-group>
+      </trans-unit>
+      <trans-unit id="aanvraag.status.meerInfoGevraagd" datatype="html">
+        <source>Meer informatie gevraagd</source>
+        <target datatype="html">More information requested</target>
+        <context-group purpose="location">
+          <context context-type="sourcefile">src/app/registratie/domain/aanvraag-view.ts</context>
+          <context context-type="linenumber">36</context>
         </context-group>
       </trans-unit>
       <trans-unit id="aanvraag.status.goedgekeurd" datatype="html">
@@ -1094,6 +1110,14 @@
           <context context-type="linenumber">87</context>
         </context-group>
       </trans-unit>
+      <trans-unit id="aanvraag.detail.meerInfoReden" datatype="html">
+        <source>Gevraagde informatie</source>
+        <target datatype="html">Information requested</target>
+        <context-group purpose="location">
+          <context context-type="sourcefile">src/app/registratie/domain/aanvraag-view.ts</context>
+          <context context-type="linenumber">99</context>
+        </context-group>
+      </trans-unit>
       <trans-unit id="aanvraag.detail.reden" datatype="html">
         <source>Reden van afwijzing</source>
         <target datatype="html">Reason for rejection</target>