diff --git a/source/constants.ts b/source/constants.ts
index 2e1c6f7..9eff4c8 100644
--- a/source/constants.ts
+++ b/source/constants.ts
@@ -1,3 +1,18 @@
+/**
+ * Success response status code.
+ */
+export const HTTP_STATUS_CODE_SUCCESS = 200;
+
+/**
+ * Created response status code.
+ */
+export const HTTP_STATUS_CODE_CREATED = 201;
+
+/**
+ * No content response status code.
+ */
+export const HTTP_STATUS_CODE_NO_CONTENT = 204;
+
 /**
  * HTTP status code for "Not Acceptable" error.
  */
diff --git a/source/services/route-stream.ts b/source/services/route-stream.ts
index 9c41221..e3b1b6c 100644
--- a/source/services/route-stream.ts
+++ b/source/services/route-stream.ts
@@ -1,5 +1,6 @@
 import type { RouteSendOptions, RouteStream } from '../routes/types.ts';
 import type { BaseStream } from './stream/base-stream.ts';
+import { HTTP_STATUS_CODE_NO_CONTENT, HTTP_STATUS_CODE_SUCCESS } from '../constants.ts';
 
 /**
  * Binds one application request to a connection-level stream.
@@ -44,7 +45,7 @@ export class ApplicationRouteStream implements RouteStream {
             await this.connection.send({
                 ...(this.requestId === undefined ? {} : { id: this.requestId }),
                 type,
-                statusCode: options.statusCode ?? (data === undefined ? 204 : 200),
+                statusCode: options.statusCode ?? (data === undefined ? HTTP_STATUS_CODE_NO_CONTENT : HTTP_STATUS_CODE_SUCCESS),
                 body: data ?? null,
             });