Medicare Claims Processing Manual (Pub. 100-04), Ch. 36 § 20.6.1.1
Requirements for Grandfathered Suppliers
20.6.1.1 - Requirements for Grandfathered Suppliers
(Rev. 1502; Issued: 05-09-08; Effective/Implementation Date: 06-09-08)
Medicare Claims Processing Manual (Pub. 100-04), Ch. 36 § 20.6.1.1