diff --git a/app/Http/Controllers/HealthCareSheetController.php b/app/Http/Controllers/HealthCareSheetController.php
index 3191b39..f0baf9b 100755
--- a/app/Http/Controllers/HealthCareSheetController.php
+++ b/app/Http/Controllers/HealthCareSheetController.php
@@ -1022,6 +1022,7 @@ class HealthCareSheetController extends Controller
                             $i->billed_quantity += $item->quantity;
                         }
                         $item->unit_price = $prescriptions[$itemIndex]['unit_price'];
+                        $item->billed_quantity = null;
                     }
 
                     if ($relation == 'exams') {
@@ -1058,7 +1059,6 @@ class HealthCareSheetController extends Controller
                     $item->insurer_paid_amount = $parts->insurer_part * $item->unit_price * ($item->quantity ?? 1) * ($item->unit_quantity ?? 1);
                     $item->created_at = $item->updated_at = $datetime;
                     $item->billed = true;
-                    $item->billed_quantity = null;
                     $item->push();
 
                     if (!empty($i->billed_quantity) && $i->billed_quantity != $i->quantity) {