diff --git a/netforce_clinic/models/hd_case.py b/netforce_clinic/models/hd_case.py
index 1e36492..2ce1bb5 100644
--- a/netforce_clinic/models/hd_case.py
+++ b/netforce_clinic/models/hd_case.py
@@ -278,6 +278,20 @@ class HDCase(Model):
                 return num
             get_model("sequence").increment_number(seq_id,context=context)
 
+    def _get_invoice_noclaim_number(self,context={}):
+        while 1:
+            seq_id=get_model("sequence").find_sequence(type="clinic_invoice_noclaim")
+            num=get_model("sequence").get_next_number(seq_id,context=context)
+            if not num:
+                return None
+            user_id=get_active_user()
+            set_active_user(1)
+            res=self.search([["number","=",num]])
+            set_active_user(user_id)
+            if not res:
+                return num
+            get_model("sequence").increment_number(seq_id,context=context)
+
     _defaults={
         "state": "draft",
         "date": lambda *a: time.strftime("%Y-%m-%d"),
@@ -661,7 +675,9 @@ class HDCase(Model):
             partner=patient.partner_id
             if not partner:
                 raise Exception("No contact for this patient %s"%obj.partner.name)
+            number=self._get_invoice_noclaim_number(context=context)
             vals={
+                'number': number,
                 "type": "out",
                 "inv_type": "invoice",
                 "tax_type": "tax_in",
diff --git a/netforce_clinic/models/sequence.py b/netforce_clinic/models/sequence.py
index e8173eb..a0d9a00 100644
--- a/netforce_clinic/models/sequence.py
+++ b/netforce_clinic/models/sequence.py
@@ -51,6 +51,7 @@ class Sequence(Model):
             ["clinic_rdshop","RD Shop"],
             ["clinic_rdshop_credit","RD Shop Credit"],
             ["clinic_rdshop_cash","RD Shop Cash"],
+            ["clinic_invoice_noclaim","Invoice No Claim"],
             ["other","Other"]],"Type",required=True,search=True),
     }