AMA PRA Category 1 credit™ is issued by an accredited provider to physicians who participate in their certified activities and claim credit. Category 1 credit is provided for activities that meet all the requirements prescribed by the AMA. They are formal, pre-planned activities including live activities, and enduring materials.
AMA PRA Category 2 credit is activities that provide valuable learning for individual physicians that are not designated for Category 1 credit. They might include such activities as unstructured online searching, reading authoritative medical literature, or self-assessment activities.
For a more complete explanation, you may consult: