Does Aetna require the NPI on paper claims?
Regulations only require the use of NPIs on electronic transactions. However, the professional and institutional paper claims forms (CMS [previously HCFA] 1500 version 12/90 and UB-92) were revised to allow NPIs to be included. We recommend you send, but do not require, NPIs on the revised forms (CMS 1500 version 08/2005 and UB-04). Additional information on the new CMS 1500 form is available at www.nucc.org. Select “1500 Claim Form,” then “1500 Instructions.” You may also subscribe to the UB-04 manual; visit www.nubc.org.