There are two time-based CPT codes for non-face-to-face prolonged care services. These codes may not be used on the day of an Evaluation and Management (E/M) service, such as an office visit or hospital service.  Physicians and other qualified health care professionals who have E/M in their scope of practice may use these codes.  CMS has assigned a status indicator of invalid to these codes, and stopped paying  for them as of 1/1/2023.

Codes 99358 and 99359 are used for non-face-to-face prolonged services by the billing physician/NP/PA when provided in relation to an E/M service on a different day than an E/M service. CPT says it “may only be reported when it occurs on a date other than the date of an evaluation and management service.” Their emphasis.