HCPCS Level II · Procedures and professional services (temporary)
G0559Post-operative follow-up visit complexity inherent to evaluation and management services addressing surgical procedure(s), provided by a physician or qualified health care professional who is not the practitioner who performed the procedure (or in the same group practice) and is of the same or of a different specialty than the practitioner who performed the procedure, within the 90-day global period of the procedure(s), once per 90-day global period, when there has not been a formal transfer of care and requires the following required elements, when possible and applicable: reading available surgical note to understand the relative success of the procedure, the anatomy that was affected, and potential complications that could have arisen due to the unique circumstances of the patient's operation. research the procedure to determine expected post-operative course and potential complications (in the case of doing a post-op for a procedure outside the specialty). evaluate and physically examine the patient to determine whether the post-operative course is progressing appropriately. communicate with the practitioner who performed the procedure if any questions or concerns arise. (list separately in addition to office/outpatient evaluation and management visit, new or established)
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About G0559
G0559 is an HCPCS Level II code in the G series (procedures and professional services (temporary)), describing post-operative follow-up visit complexity inherent to evaluation and management services addressing surgical procedure(s), provided by a physician or qualified health care professional who is not the practitioner who performed the procedure (or in the same group practice) and is of the same or of a different specialty than the practitioner who performed the procedure, within the 90-day global period of the procedure(s), once per 90-day global period, when there has not been a formal transfer of care and requires the following required elements, when possible and applicable: reading available surgical note to understand the relative success of the procedure, the anatomy that was affected, and potential complications that could have arisen due to the unique circumstances of the patient's operation. research the procedure to determine expected post-operative course and potential complications (in the case of doing a post-op for a procedure outside the specialty). evaluate and physically examine the patient to determine whether the post-operative course is progressing appropriately. communicate with the practitioner who performed the procedure if any questions or concerns arise. (list separately in addition to office/outpatient evaluation and management visit, new or established).
It was added to HCPCS effective 01/01/2025.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Unrelat prac follow up visit
- Date added
- 01/01/2025
- Action effective
- 01/01/2025
- BETOS
- M5D
Related G05xx codes
- G0500Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monitoring of the patient's level of consciousness and physiological status; initial 15 minutes of intra-service time; patient age 5 years or older (additional time may be reported with 99153, as appropriate)
- G0501Resource-intensive services for patients for whom the use of specialized mobility-assistive technology (such as adjustable height chairs or tables, patient lift, and adjustable padded leg supports) is medically necessary and used during the provision of an office/outpatient, evaluation and management visit (list separately in addition to primary service)
- G0506Comprehensive assessment of and care planning for patients requiring chronic care management services (list separately in addition to primary monthly care management service)
- G0508Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth
- G0509Telehealth consultation, critical care, subsequent, physicians typically spend 50 minutes communicating with the patient and providers via telehealth
- G0513Prolonged preventive service(s) (beyond the typical service time of the primary procedure), in the office or other outpatient setting requiring direct patient contact beyond the usual service; first 30 minutes (list separately in addition to code for preventive service)
- G0514Prolonged preventive service(s) (beyond the typical service time of the primary procedure), in the office or other outpatient setting requiring direct patient contact beyond the usual service; each additional 30 minutes (list separately in addition to code g0513 for additional 30 minutes of preventive service)
- G0516Insertion of non-biodegradable drug delivery implants, 4 or more (services for subdermal rod implant)
- G0517Removal of non-biodegradable drug delivery implants, 4 or more (services for subdermal implants)
- G0518Removal with reinsertion, non-biodegradable drug delivery implants, 4 or more (services for subdermal implants)
- G0519Management of new patient-caregiver dyad with dementia, low complexity, for use in cmmi model
- G0520Management of new patient-caregiver dyad with dementia, moderate complexity, for use in cmmi model
Common questions about G0559
Is HCPCS G0559 still valid?
- Yes. G0559 is active in the CMS October 2026 HCPCS file.
Does Medicare cover G0559?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.