diff --git a/src/datanode/src/metrics.rs b/src/datanode/src/metrics.rs
index 74da5b153f4..7573490c747 100644
--- a/src/datanode/src/metrics.rs
+++ b/src/datanode/src/metrics.rs
@@ -17,6 +17,7 @@ use prometheus::*;
 
 /// Region request type label.
 pub const REGION_REQUEST_TYPE: &str = "datanode_region_request_type";
+const REGION_REQUEST_CODE: &str = "code";
 
 pub const REGION_ROLE: &str = "region_role";
 pub const REGION_ID: &str = "region_id";
@@ -84,11 +85,12 @@ lazy_static! {
     )
     .unwrap();
 
-    /// Total count of failed insert requests to region server.
+    /// Total count of failed insert requests to region server, labeled with request
+    /// type and status code.
     pub static ref REGION_SERVER_INSERT_FAIL_COUNT: IntCounterVec = register_int_counter_vec!(
         "greptime_datanode_region_failed_insert_count",
         "failed region server insert requests count",
-        &[REGION_REQUEST_TYPE]
+        &[REGION_REQUEST_TYPE, REGION_REQUEST_CODE]
     )
     .unwrap();
 
diff --git a/src/datanode/src/region_server.rs b/src/datanode/src/region_server.rs
index 10bcf32b13d..527ab0491c0 100644
--- a/src/datanode/src/region_server.rs
+++ b/src/datanode/src/region_server.rs
@@ -687,7 +687,7 @@ impl RegionServer {
             }
             Err(err) => {
                 crate::metrics::REGION_SERVER_INSERT_FAIL_COUNT
-                    .with_label_values(&[request_type])
+                    .with_label_values(&[request_type, err.status_code().as_ref()])
                     .inc_by(batch_size as u64);
                 Err(err)
             }
@@ -1640,7 +1640,7 @@ impl RegionServerInner {
             Err(err) => {
                 if matches!(region_change, RegionChange::Ingest) {
                     crate::metrics::REGION_SERVER_INSERT_FAIL_COUNT
-                        .with_label_values(&[request_type])
+                        .with_label_values(&[request_type, err.status_code().as_ref()])
                         .inc();
                 }
                 // Removes the region status if the operation fails.