diff --git a/homeassistant/components/gatus/sensor.py b/homeassistant/components/gatus/sensor.py
index dfa5e418d32d..86fea0e5462f 100644
--- a/homeassistant/components/gatus/sensor.py
+++ b/homeassistant/components/gatus/sensor.py
@@ -12,7 +12,7 @@ from homeassistant.components.sensor import (
     SensorEntityDescription,
     SensorStateClass,
 )
-from homeassistant.const import UnitOfTime
+from homeassistant.const import EntityCategory, UnitOfTime
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 
@@ -42,6 +42,12 @@ SENSOR_TYPES: tuple[GatusSensorEntityDescription, ...] = (
             else None
         ),
     ),
+    GatusSensorEntityDescription(
+        key="status_code",
+        translation_key="status_code",
+        entity_category=EntityCategory.DIAGNOSTIC,
+        value_fn=lambda result: result.status,
+    ),
 )
 
 
diff --git a/homeassistant/components/gatus/strings.json b/homeassistant/components/gatus/strings.json
index d0fc3eaabc64..8223fd3c0b4b 100644
--- a/homeassistant/components/gatus/strings.json
+++ b/homeassistant/components/gatus/strings.json
@@ -33,6 +33,9 @@
     "sensor": {
       "response_time": {
         "name": "Response time"
+      },
+      "status_code": {
+        "name": "Status code"
       }
     }
   },
diff --git a/tests/components/gatus/snapshots/test_sensor.ambr b/tests/components/gatus/snapshots/test_sensor.ambr
index 8bb3bf1c31ee..deae4b1ccb69 100644
--- a/tests/components/gatus/snapshots/test_sensor.ambr
+++ b/tests/components/gatus/snapshots/test_sensor.ambr
@@ -57,3 +57,53 @@
     'state': '23.12',
   })
 # ---
+# name: test_sensor_setup_and_states[sensor.core_backend_service_status_code-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': <EntityCategory.DIAGNOSTIC: 'diagnostic'>,
+    'entity_id': 'sensor.core_backend_service_status_code',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Status code',
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Status code',
+    'platform': 'gatus',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'status_code',
+    'unique_id': '1234567890abcdef1234567890abcdef_backend_service_status_code',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_sensor_setup_and_states[sensor.core_backend_service_status_code-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'Core Backend Service Status code',
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.core_backend_service_status_code',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '200',
+  })
+# ---
diff --git a/tests/components/gatus/test_sensor.py b/tests/components/gatus/test_sensor.py
index 0da46742ddf8..bba25e68450b 100644
--- a/tests/components/gatus/test_sensor.py
+++ b/tests/components/gatus/test_sensor.py
@@ -143,3 +143,25 @@ async def test_sensor_missing_duration(
     state = hass.states.get("sensor.backend_service_response_time")
     assert state is not None
     assert state.state == STATE_UNKNOWN
+
+
+async def test_sensor_missing_status_code(
+    hass: HomeAssistant,
+    mock_gatus_client: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test that a result missing status code evaluates to STATE_UNKNOWN for status code sensor."""
+    mock_gatus_client.get_endpoints_statuses.return_value = [
+        EndpointStatus(
+            key="backend_service",
+            name="Backend Service",
+            group=None,
+            results=[Result(success=True, status=None, duration=12500000)],
+        )
+    ]
+
+    await setup_integration(hass, mock_config_entry)
+
+    state = hass.states.get("sensor.backend_service_status_code")
+    assert state is not None
+    assert state.state == STATE_UNKNOWN