diff --git a/classes/lab/Domicilio.php b/classes/lab/Domicilio.php
index b6c80bd..bf484ae 100644
--- a/classes/lab/Domicilio.php
+++ b/classes/lab/Domicilio.php
@@ -285,6 +285,13 @@ class Domicilio {
             }
         }
 
+        // Normalizar campos numéricos opcionales vacíos a NULL para evitar "Incorrect decimal value: ''"
+        foreach (['valor_domicilio', 'valor_copago', 'copago_laboratorio', 'pago_monto'] as $num) {
+            if (array_key_exists($num, $campos) && trim((string)$campos[$num]) === '') {
+                $campos[$num] = null;
+            }
+        }
+
         return $campos;
     }
 }