Medicare Claims Processing Manual (Pub. 100-04), Ch. 35 § 30.1
National Provider Identification (NPI) Reported on Claims
30.1 - National Provider Identification (NPI) Reported on Claims
(Rev. 2994; Issued: 07-25-14; Effective: 01-01-12; Implementation: 08-25-14)
Effective for dates of service May 23, 2008 and later, IDTF’s must submit the NPI
assigned to the ordering physician using the ASC X12 837 professional claim format or,
for paper claims, on the Form CMS-1500.