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New CPT Code 99439 Replacement for CPT G2058

The chronic care management additional 20 minutes add-on CPT code G2058 was deleted from Jan 1, 2021, and the new code chronic care management CPT 99439 was introduced for the same.

G2058 - Chronic care management services, each additional 20 minutes of clinical staff time directed by a physician or other qualified health care professional, per calendar month (List separately in addition to code for the primary procedure - 99490)

99439 - Chronic care management services with the following required elements: multiple (two or more) chronic conditions; each additional 20 minutes of clinical staff time directed by a physician or other qualified health care professional, per calendar month (List separately in addition to code for the primary procedure)

  • Use 99439 in conjunction with 99490 and Chronic care management services of less than 20 minutes duration, in a calendar month, are not reported separately
  • Do not report 99439 more than twice per calendar month
  • Do not report 99439, 99490 in the same calendar month with 90951-90970, 99339, 99340, 99374, 99375, 99377, 99378, 99379, 99380, 99487, 99489, 99491, 99605, 99606, 99607
  • Do not report 99439, 99490 for service time reported with 93792, 93793, 98960, 98961, 98962, 98966, 98967, 98968, 98970, 98971, 98972, 99071, 99078, 99080, 99091, 99358, 99359, 99366, 99367, 99368, 99421, 99422, 99423, 99441, 99442, 99443, 99605, 99606, 99607


The total duration of the staff care management services must meet the time listed in the code descriptor to be reported. 

For instance, for services totaling 40 minutes, you may report 99490 (first 20 minutes) and +99439 (additional 20 minutes). 

But for 39 minutes, you should report only 99490. A total of 39 minutes does not meet the requirement of 20 minutes for 99490 and another 20 minutes for +99439.

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