HCPCS Level II · Procedures and professional services (temporary)
G0545Visit complexity inherent to hospital inpatient or observation care associated with a confirmed or suspected infectious disease by an infectious diseases specialist, including disease transmission risk assessment and mitigation, public health investigation, analysis, and testing, and complex antimicrobial therapy counseling and treatment (add-on code, list separately in addition to hospital inpatient or observation evaluation and management visit, initial, same day discharge, subsequent or discharge)
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About G0545
G0545 is an HCPCS Level II code in the G series (procedures and professional services (temporary)), describing visit complexity inherent to hospital inpatient or observation care associated with a confirmed or suspected infectious disease by an infectious diseases specialist, including disease transmission risk assessment and mitigation, public health investigation, analysis, and testing, and complex antimicrobial therapy counseling and treatment (add-on code, list separately in addition to hospital inpatient or observation evaluation and management visit, initial, same day discharge, subsequent or discharge).
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
- Inherent visit to inpt
- 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 G0545
Is HCPCS G0545 still valid?
- Yes. G0545 is active in the CMS October 2026 HCPCS file.
Does Medicare cover G0545?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.