Digital assessment services are non-face-to-face, patient-initiated, digital communications using a secure online patient portal. The digital assessment codes that are billable during the COVID-19 PHE are CPT code 99421 (5-10 minutes over a 7-day period), CPT code 99422 (11-20 minutes over a 7-day period), and CPT code 99423 (21 minutes or more ....