Why Was The Form CMS 1500 Updated?

Why Was The Form CMS 1500 Updated? History of the CMS-1500 In 1990, the CMS-1500 changed the form to red ink print to promote the scanning of claims. Later, further changes were made in order to accommodate the National Provider Identifier (NPI). What is the difference between 837P and CMS 1500? The 837P (Professional) is