diff --git a/litellm/types/integrations/prometheus.py b/litellm/types/integrations/prometheus.py
index a3dd4dcb1c6..6a254fc8252 100644
--- a/litellm/types/integrations/prometheus.py
+++ b/litellm/types/integrations/prometheus.py
@@ -354,6 +354,7 @@ class PrometheusMetricLabels:
         UserAPIKeyLabelNames.MODEL_ID.value,
         UserAPIKeyLabelNames.API_BASE.value,
         UserAPIKeyLabelNames.API_PROVIDER.value,
+        UserAPIKeyLabelNames.EXCEPTION_STATUS.value,
     ]
 
     litellm_deployment_successful_fallbacks = [
diff --git a/tests/enterprise/litellm_enterprise/enterprise_callbacks/test_prometheus_logging_callbacks.py b/tests/enterprise/litellm_enterprise/enterprise_callbacks/test_prometheus_logging_callbacks.py
index c56582adf46..e8fe4dd3393 100644
--- a/tests/enterprise/litellm_enterprise/enterprise_callbacks/test_prometheus_logging_callbacks.py
+++ b/tests/enterprise/litellm_enterprise/enterprise_callbacks/test_prometheus_logging_callbacks.py
@@ -1050,8 +1050,22 @@ def test_deployment_state_management(prometheus_logger):
 
 
 def test_increment_deployment_cooled_down(prometheus_logger):
+    import inspect
+
+    method_sig = inspect.signature(prometheus_logger.increment_deployment_cooled_down)
+    expected_label_count = len([p for p in method_sig.parameters.keys() if p != 'self'])
+
+    mock_chain = MagicMock()
+
+    def validating_labels(*label_values, **label_kwargs):
+        """Validate label count matches metric definition"""
+        total = len(label_values) + len(label_kwargs)
+        if total != expected_label_count:
+            raise ValueError(f"Incorrect label count: expected {expected_label_count}, got {total}")
+        return mock_chain
 
     prometheus_logger.litellm_deployment_cooled_down = MagicMock()
+    prometheus_logger.litellm_deployment_cooled_down.labels = MagicMock(side_effect=validating_labels)
 
     prometheus_logger.increment_deployment_cooled_down(
         litellm_model_name="gpt-3.5-turbo",
@@ -1064,7 +1078,7 @@ def test_increment_deployment_cooled_down(prometheus_logger):
     prometheus_logger.litellm_deployment_cooled_down.labels.assert_called_once_with(
         "gpt-3.5-turbo", "model-123", "https://api.openai.com", "openai", "429"
     )
-    prometheus_logger.litellm_deployment_cooled_down.labels().inc.assert_called_once()
+    mock_chain.inc.assert_called_once()
 
 
 @pytest.mark.parametrize("enable_end_user_cost_tracking_prometheus_only", [True, False])