Medicare Claims Processing Manual (Pub. 100-04), Ch. 15 § 30.1.3
Coding Instructions for Form CMS-1491
30.1.3 - Coding Instructions for Form CMS-1491
(Rev. 1696; Issued: 03-06-09; Effective/Implementation Date: 04-06-09)
Effective April 2, 2007, Form CMS-1491 will no longer be a valid format for submitting claims.
Suppliers who wish to submit a paper claim must use CMS-1500 Form.