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. 2021 Jan 8;7(1):e21327. doi: 10.2196/21327

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©Alpana Garg, Sachin Goyal, Rohit Thati, Neelima Thati. Originally published in JMIR Public Health and Surveillance (http://publichealth.jmir.org), 08.01.2021.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Public Health and Surveillance, is properly cited. The complete bibliographic information, a link to the original publication on http://publichealth.jmir.org, as well as this copyright and license information must be included.

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Histogram showing most common billing codes used. 99214 is an established patient office visit for 25 minutes (used with telemedicine code modifier); 99204 is a new patient office visit for 45 minutes (used with telemedicine code modifier); 99215 is an established patient office visit for 40 minutes (used with telemedicine code modifier); 99443 is a telephone evaluation and management for 21-30 minutes; 99442 is a telephone evaluation and management for 11-20 minutes.