What does box 33 of the CMS-1500 form capture?

Box 33 of the CMS-1500 form is specifically designated to capture the billing provider's information. This includes the provider's name, address, and National Provider Identifier (NPI) number, which is essential for identifying healthcare providers in transactions involving health insurance claims. Accurate and complete information in this box helps ensure that the claim is processed correctly and that the provider receives appropriate reimbursement for services rendered. The significance of this box lies in its role in allowing insurance companies to verify and authorize claims based on the credentials of the billing provider.

In this context, other options do not fit because Box 33 is not intended for patient demographic information, insurance policy numbers, or total charges for services. Each of those categories is captured in different sections of the form specifically designed for that purpose, emphasizing the structured nature of the CMS-1500 as a standardized document for medical billing and claims processing.