Select the correct statement regarding code sets and identifiers.

A covered entity must use the applicable code set that is valid at the time the transaction is initiated.

April 14, 2003 is the compliance date for implementation of the National Provider Identifier.

CMS is responsible for updating the CPT-4 code set.

An organization that assigns NPIs is referred to as National Provider for Identifiers.

HHS assigns the Employer Identification Number (EIN), which has been selected as the National Provider Identifier for Health Care.