diff --git a/src/modules/appointments/appointment.controller.js b/src/modules/appointments/appointment.controller.js
index e9b7ae5..c840100 100644
--- a/src/modules/appointments/appointment.controller.js
+++ b/src/modules/appointments/appointment.controller.js
@@ -1,26 +1,26 @@
 import * as appointmentService from './appointment.service.js';
 import { asyncHandler, ApiResponse } from '../../shared/utils/helpers.js';
-
+// Controller functions for appointment routes
 export const createAppointment = asyncHandler(async (req, res) => {
   const result = await appointmentService.createAppointment(req.body);
   res.status(201).json(ApiResponse.success(result, 'Appointment created successfully', 201));
 });
-
+// Get all appointments with optional filters (date range, provider, user)
 export const getAllAppointments = asyncHandler(async (req, res) => {
   const result = await appointmentService.getAllAppointments(req.query);
   res.status(200).json(ApiResponse.success(result, 'Appointments retrieved successfully'));
 });
-
+// Get appointment by ID
 export const getAppointmentById = asyncHandler(async (req, res) => {
   const result = await appointmentService.getAppointmentById(req.params.appointmentId);
   res.status(200).json(ApiResponse.success(result, 'Appointment retrieved successfully'));
 });
-
+// Get appointments for a specific user
 export const getUserAppointments = asyncHandler(async (req, res) => {
   const result = await appointmentService.getAppointmentsByUser(req.params.userId, req.query);
   res.status(200).json(ApiResponse.success(result, 'User appointments retrieved successfully'));
 });
-
+// Get appointments for a specific provider
 export const getProviderAppointments = asyncHandler(async (req, res) => {
   const result = await appointmentService.getAppointmentsByProvider(req.params.providerId, req.query);
   res.status(200).json(ApiResponse.success(result, 'Provider appointments retrieved successfully'));