Thursday, March 10, 2011

How to fill box 33 on CMS 1500

Billing instruction for Ambulance Billing - Box 33

BlockNo. Block Name Block Code Notes
33 Billing Provider
Info & Ph.#
A/A& M/M Enter the billing provider’s name, address, and telephone number
Do not use slashes, hyphens, or spaces.
Note: If services are rendered in the patient’s home or facility, enter the service location of the provider’s main office.
33a A Enter the 10-digit NPI number of the billing provider.
33b M/A Enter the 13-digit Group/Billing Provider ID
number (Legacy #)

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