diff --git a/openapi/code_samples/JavaScript/subscriptions@{id}@items@{itemId}/patch.js b/openapi/code_samples/JavaScript/subscriptions@{id}@items@{itemId}/patch.js
new file mode 100644
index 0000000000..d963990261
--- /dev/null
+++ b/openapi/code_samples/JavaScript/subscriptions@{id}@items@{itemId}/patch.js
@@ -0,0 +1,9 @@
+const data = {
+  quantityFilled: 4,
+};
+
+const subscription = await api.subscription.updateItem({
+  id: "subscription-id",
+  itemId: "item-id",
+  data,
+});
diff --git a/openapi/paths/subscriptions@{id}@items@{itemId}.yaml b/openapi/paths/subscriptions@{id}@items@{itemId}.yaml
index b4889b2371..764e262a68 100644
--- a/openapi/paths/subscriptions@{id}@items@{itemId}.yaml
+++ b/openapi/paths/subscriptions@{id}@items@{itemId}.yaml
@@ -44,3 +44,7 @@ patch:
       $ref: ../components/responses/ValidationError.yaml
     '429':
       $ref: ../components/responses/TooManyRequests.yaml
+  x-codeSamples:
+    - lang: JavaScript
+      source:
+        $ref: "../code_samples/JavaScript/subscriptions@{id}@items@{itemId}/patch.js"