diff --git a/moto/cloudformation/models.py b/moto/cloudformation/models.py
index cddb22d0c..b260917b4 100644
--- a/moto/cloudformation/models.py
+++ b/moto/cloudformation/models.py
@@ -272,6 +272,7 @@ class FakeStackInstance(BaseModel):
             "Account": self.account_id,
             "Status": "CURRENT",
             "ParameterOverrides": self.parameters,
+            "StackInstanceStatus": {"DetailedStatus": "SUCCEEDED"},
         }
 
 
diff --git a/moto/cloudformation/responses.py b/moto/cloudformation/responses.py
index 8c762f6bc..fa192e25d 100644
--- a/moto/cloudformation/responses.py
+++ b/moto/cloudformation/responses.py
@@ -1122,6 +1122,9 @@ DESCRIBE_STACK_INSTANCE_TEMPLATE = """<DescribeStackInstanceResponse xmlns="http
       <Region>{{ instance["Region"] }}</Region>
       <Account>{{ instance["Account"] }}</Account>
       <Status>{{ instance["Status"] }}</Status>
+      <StackInstanceStatus>
+          <DetailedStatus>{{ instance["StackInstanceStatus"]["DetailedStatus"] }}</DetailedStatus>
+      </StackInstanceStatus>
     </StackInstance>
   </DescribeStackInstanceResult>
   <ResponseMetadata>
diff --git a/tests/test_cloudformation/test_cloudformation_stack_crud_boto3.py b/tests/test_cloudformation/test_cloudformation_stack_crud_boto3.py
index b2bdb7649..ae7474ae2 100644
--- a/tests/test_cloudformation/test_cloudformation_stack_crud_boto3.py
+++ b/tests/test_cloudformation/test_cloudformation_stack_crud_boto3.py
@@ -350,17 +350,19 @@ def test_describe_stack_instances():
         StackSetName="teststackset",
         StackInstanceAccount=ACCOUNT_ID,
         StackInstanceRegion="us-west-2",
-    )
+    )["StackInstance"]
     use1_instance = cf.describe_stack_instance(
         StackSetName="teststackset",
         StackInstanceAccount=ACCOUNT_ID,
         StackInstanceRegion="us-east-1",
-    )
+    )["StackInstance"]
 
-    assert usw2_instance["StackInstance"]["Region"] == "us-west-2"
-    assert usw2_instance["StackInstance"]["Account"] == ACCOUNT_ID
-    assert use1_instance["StackInstance"]["Region"] == "us-east-1"
-    assert use1_instance["StackInstance"]["Account"] == ACCOUNT_ID
+    assert use1_instance["Region"] == "us-east-1"
+    assert usw2_instance["Region"] == "us-west-2"
+    for instance in [use1_instance, usw2_instance]:
+        assert instance["Account"] == ACCOUNT_ID
+        assert instance["Status"] == "CURRENT"
+        assert instance["StackInstanceStatus"] == {"DetailedStatus": "SUCCEEDED"}
 
 
 @mock_cloudformation