diff --git a/healthcareio/x12/__init__.py b/healthcareio/x12/__init__.py
index 3c8e692..5f49cca 100644
--- a/healthcareio/x12/__init__.py
+++ b/healthcareio/x12/__init__.py
@@ -122,8 +122,15 @@ class Formatters :
     def suppress (self,value):
         return 'N/A'
     def date(self,value):
+        value = value if type(value) != list else "-".join(value)
         if len(value) > 8 or '-' in value:
-            value = value.split('-')[0]
+            #
+            # This is the case of a thru date i.e the first part should be provided in a 435 entry
+            #
+            fdate = "-".join([value[:8][:4],value[:8][4:6],value[:8][6:8]])
+            tdate = "-".join([value[9:][:4],value[9:][4:6],value[9:][6:8]])
+            
+            return {"from":fdate,"to":tdate}
 
         if len(value) == 8 :
             year = value[:4]
diff --git a/setup.py b/setup.py
index 0cb3a4d..a4021d4 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@ import sys
 def read(fname):
     return open(os.path.join(os.path.dirname(__file__), fname)).read() 
 args = {
-    "name":"healthcareio","version":"1.6.4.2",
+    "name":"healthcareio","version":"1.6.4.3",
     "author":"Vanderbilt University Medical Center",
     "author_email":"steve.l.nyemba@vumc.org",
     "include_package_data":True,