1        Summary Electronic Invoice
2        Full Electronic Invoice
3        Printed Invoice Sent by Mail
4        Summary Electronic Invoice and Printed Invoice Sent by Mail
5        Full Electronic Invoice and Printed Invoice Sent by Mail
6        No paper Invoice
7        Summary Electronic Invoice and No paper Invoice
8        Full Electronic Invoice and No Paper Invoice
9        Electronic Mail
AA       Available on Request at Provider Site
AC       American College of Radiology/National Electronic Manufacturers Association 
         (ACR/NEMA DICOM) Format
AE       Electronically After Shipping
AM       By Mail After Shipping
AS       American Society for Testing and Materials Format (ASTM E1238)
AT       American Society for Testing and Materials Format (ASTM E1384)
AU       By Data Pattern
BE       By Mail and Electronically
BM       By Mail
BW       Best Way (Sender's Option)
CD       Courier Diskette
CF       Courier
CP       Courier Paper
CT       Courier Tape
DA       Data
EL       Electronically Only
EM       E-Mail
FT       File Transfer
FX       By Fax
GS       On General Services Administration (GSA) Form 10050
HL       Health Industry Level 7 Interface Standards (HL/7) Format
IA       Electronic Image
IE       Electronically with Invoice
IM       By Mail with Invoice
MB       Binary Image
MD       Mail Diskette
MN       Magnetic Media
MP       Mail Paper
MT       Mail Tape
NS       Not Specified
OL       On-Line
PO       Printed Original Required
SE       Electronically Before Shipping
SM       By Mail Before Shipping
SN       With Ship Notice
SW       Society for Worldwide Interbank Financial Telecommunication (SWIFT)
TA       Telex
TE       Separately, Electronically at Time of Shipping
TM       Separately, by Mail at Time of Shipping
TX       Text
VO       Voice
WS       With Shipment (With Package)