diff --git a/homeassistant/components/zwave_js/api.py b/homeassistant/components/zwave_js/api.py
index b33e91b1b76..ee0d4eb43a3 100644
--- a/homeassistant/components/zwave_js/api.py
+++ b/homeassistant/components/zwave_js/api.py
@@ -334,7 +334,6 @@ def async_register_api(hass: HomeAssistant) -> None:
         hass, websocket_update_data_collection_preference
     )
     websocket_api.async_register_command(hass, websocket_data_collection_status)
-    websocket_api.async_register_command(hass, websocket_version_info)
     websocket_api.async_register_command(hass, websocket_abort_firmware_update)
     websocket_api.async_register_command(
         hass, websocket_subscribe_firmware_update_status
@@ -1752,35 +1751,6 @@ async def websocket_data_collection_status(
     connection.send_result(msg[ID], result)
 
 
-@websocket_api.require_admin
-@websocket_api.websocket_command(
-    {
-        vol.Required(TYPE): "zwave_js/version_info",
-        vol.Required(ENTRY_ID): str,
-    },
-)
-@websocket_api.async_response
-@async_get_entry
-async def websocket_version_info(
-    hass: HomeAssistant,
-    connection: ActiveConnection,
-    msg: dict,
-    entry: ConfigEntry,
-    client: Client,
-) -> None:
-    """Get version info from the Z-Wave JS server."""
-    version_info = {
-        "driver_version": client.version.driver_version,
-        "server_version": client.version.server_version,
-        "min_schema_version": client.version.min_schema_version,
-        "max_schema_version": client.version.max_schema_version,
-    }
-    connection.send_result(
-        msg[ID],
-        version_info,
-    )
-
-
 @websocket_api.require_admin
 @websocket_api.websocket_command(
     {
diff --git a/homeassistant/components/zwave_js/diagnostics.py b/homeassistant/components/zwave_js/diagnostics.py
index 628c4c70a90..080fffe2107 100644
--- a/homeassistant/components/zwave_js/diagnostics.py
+++ b/homeassistant/components/zwave_js/diagnostics.py
@@ -35,4 +35,15 @@ async def async_get_device_diagnostics(
     if node_id is None or node_id not in client.driver.controller.nodes:
         raise ValueError(f"Node for device {device.id} can't be found")
     node = client.driver.controller.nodes[node_id]
-    return {**node.data, "values": [value.data for value in node.values.values()]}
+    return {
+        "versionInfo": {
+            "driverVersion": client.version.driver_version,
+            "serverVersion": client.version.server_version,
+            "minSchemaVersion": client.version.min_schema_version,
+            "maxSchemaVersion": client.version.max_schema_version,
+        },
+        "state": {
+            **node.data,
+            "values": [value.data for value in node.values.values()],
+        },
+    }
diff --git a/tests/components/zwave_js/test_api.py b/tests/components/zwave_js/test_api.py
index 3bc75097a02..40f60b9018a 100644
--- a/tests/components/zwave_js/test_api.py
+++ b/tests/components/zwave_js/test_api.py
@@ -2716,57 +2716,6 @@ async def test_get_config_parameters(hass, multisensor_6, integration, hass_ws_c
     assert msg["error"]["code"] == ERR_NOT_LOADED
 
 
-async def test_version_info(hass, integration, hass_ws_client, version_state):
-    """Test version info API request."""
-    entry = integration
-    ws_client = await hass_ws_client(hass)
-
-    version_info = {
-        "driver_version": version_state["driverVersion"],
-        "server_version": version_state["serverVersion"],
-        "min_schema_version": 0,
-        "max_schema_version": 0,
-    }
-
-    await ws_client.send_json(
-        {
-            ID: 3,
-            TYPE: "zwave_js/version_info",
-            ENTRY_ID: entry.entry_id,
-        }
-    )
-    msg = await ws_client.receive_json()
-    assert msg["result"] == version_info
-
-    # Test getting non-existent entry fails
-    await ws_client.send_json(
-        {
-            ID: 4,
-            TYPE: "zwave_js/version_info",
-            ENTRY_ID: "INVALID",
-        }
-    )
-    msg = await ws_client.receive_json()
-    assert not msg["success"]
-    assert msg["error"]["code"] == ERR_NOT_FOUND
-
-    # Test sending command with not loaded entry fails
-    await hass.config_entries.async_unload(entry.entry_id)
-    await hass.async_block_till_done()
-
-    await ws_client.send_json(
-        {
-            ID: 5,
-            TYPE: "zwave_js/version_info",
-            ENTRY_ID: entry.entry_id,
-        }
-    )
-    msg = await ws_client.receive_json()
-
-    assert not msg["success"]
-    assert msg["error"]["code"] == ERR_NOT_LOADED
-
-
 async def test_firmware_upload_view(
     hass, multisensor_6, integration, hass_client, firmware_file
 ):
diff --git a/tests/components/zwave_js/test_diagnostics.py b/tests/components/zwave_js/test_diagnostics.py
index 339bb7d7d4a..b41292a15fc 100644
--- a/tests/components/zwave_js/test_diagnostics.py
+++ b/tests/components/zwave_js/test_diagnostics.py
@@ -35,6 +35,7 @@ async def test_device_diagnostics(
     multisensor_6,
     integration,
     hass_client,
+    version_state,
 ):
     """Test the device level diagnostics data dump."""
     dev_reg = async_get(hass)
@@ -67,9 +68,15 @@ async def test_device_diagnostics(
     diagnostics_data = await get_diagnostics_for_device(
         hass, hass_client, integration, device
     )
+    assert diagnostics_data["versionInfo"] == {
+        "driverVersion": version_state["driverVersion"],
+        "serverVersion": version_state["serverVersion"],
+        "minSchemaVersion": 0,
+        "maxSchemaVersion": 0,
+    }
 
     # Assert that the data returned doesn't match the stale node state data
-    assert diagnostics_data != multisensor_6.data
+    assert diagnostics_data["state"] != multisensor_6.data
 
     # Replace data for the value we updated and assert the new node data is the same
     # as what's returned
@@ -79,7 +86,7 @@ async def test_device_diagnostics(
             updated_node_data["values"][idx] = multisensor_6.values[
                 value_id
             ].data.copy()
-    assert diagnostics_data == updated_node_data
+    assert diagnostics_data["state"] == updated_node_data
 
 
 async def test_device_diagnostics_error(hass, integration):