HCPCS G-Codes
Procedures/Professional Services (Temporary Codes)

Temporary G codes are assigned to services and procedures that are under review before being included in the CPT coding system. Payment for these services is under the jurisdiction of the local carriers.

• G0498

  Chemotherapy administration, intravenous infusion technique; initiation of infusion in the office/clinic setting using office/clinic pump/supplies, with continuation of the infusion in the community setting (e.g., home, domiciliary, rest home or assisted living) using a portable pump provided by the office/clinic, includes follow up office/clinic visit at the conclusion of the infusion

• G0499

  Hepatitis b screening in non-pregnant, high risk individual includes hepatitis b surface antigen (hbsag), antibodies to hbsag (anti-hbs) and antibodies to hepatitis b core antigen (anti-hbc), and is followed by a neutralizing confirmatory test, when performed, only for an initially reactive hbsag result

• G0500

  Moderate 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)

• G0501

  Resource-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)

• G0502

  Initial psychiatric collaborative care management, first 70 minutes in the first calendar month of behavioral health care manager activities, in consultation with a psychiatric consultant, and directed by the treating physician or other qualified health care professional, with the following required elements: outreach to and engagement in treatment of a patient directed by the treating physician or other qualified health care professional; initial assessment of the patient, including administration of validated rating scales, with the development of an individualized treatment plan; review by the psychiatric consultant with modifications of the plan if recommended; entering patient in a registry and tracking patient follow-up and progress using the registry, with appropriate documentation, and participation in weekly caseload consultation with the psychiatric consultant; and provision of brief interventions using evidence-based techniques such as behavioral activation, motivational interviewing, and other focused treatment strategies

• G0503

  Subsequent psychiatric collaborative care management, first 60 minutes in a subsequent month of behavioral health care manager activities, in consultation with a psychiatric consultant, and directed by the treating physician or other qualified health care professional, with the following required elements: tracking patient follow-up and progress using the registry, with appropriate documentation; participation in weekly caseload consultation with the psychiatric consultant; ongoing collaboration with and coordination of the patient's mental health care with the treating physician or other qualified health care professional and any other treating mental health providers; additional review of progress and recommendations for changes in treatment, as indicated, including medications, based on recommendations provided by the psychiatric consultant; provision of brief interventions using evidence-based techniques such as behavioral activation, motivational interviewing, and other focused treatment strategies; monitoring of patient outcomes using validated rating scales; and relapse prevention planning with patients as they achieve remission of symptoms and/or other treatment goals and are prepared for discharge from active treatment

• G0504

  Initial or subsequent psychiatric collaborative care management, each additional 30 minutes in a calendar month of behavioral health care manager activities, in consultation with a psychiatric consultant, and directed by the treating physician or other qualified health care professional (list separately in addition to code for primary procedure); (use g0504 in conjunction with g0502, g0503)

• G0505

  Cognition and functional assessment using standardized instruments with development of recorded care plan for the patient with cognitive impairment, history obtained from patient and/or caregiver, in office or other outpatient setting or home or domiciliary or rest home

• G0506

  Comprehensive assessment of and care planning for patients requiring chronic care management services (list separately in addition to primary monthly care management service)

• G0507

  Care management services for behavioral health conditions, at least 20 minutes of clinical staff time, directed by a physician or other qualified health care professional, per calendar month, with the following required elements: initial assessment or follow-up monitoring, including the use of applicable validated rating scales; behavioral health care planning in relation to behavioral/psychiatric health problems, including revision for patients who are not progressing or whose status changes; facilitating and coordinating treatment such as psychotherapy, pharmacotherapy, counseling and/or psychiatric consultation; and continuity of care with a designated member of the care team

• ---

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  Continued

• G0508

  Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth

• G0509

  Telehealth consultation, critical care, subsequent, physicians typically spend 50 minutes communicating with the patient and providers via telehealth

• G0511

  Rural health clinic or federally qualified health center (rhc or fqhc) only, general care management, 20 minutes or more of clinical staff time for chronic care management services or behavioral health integration services directed by an rhc or fqhc practitioner (physician, np, pa, or cnm), per calendar month

• G0512

  Rural health clinic or federally qualified health center (rhc/fqhc) only, psychiatric collaborative care model (psychiatric cocm), 60 minutes or more of clinical staff time for psychiatric cocm services directed by an rhc or fqhc practitioner (physician, np, pa, or cnm) and including services furnished by a behavioral health care manager and consultation with a psychiatric consultant, per calendar month

• G0513

  Prolonged 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)

• G0514

  Prolonged 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)

• G0515

  Development of cognitive skills to improve attention, memory, problem solving (includes compensatory training), direct (one-on-one) patient contact, each 15 minutes

• G0516

  Insertion of non-biodegradable drug delivery implants, 4 or more (services for subdermal rod implant)

• G0517

  Removal of non-biodegradable drug delivery implants, 4 or more (services for subdermal implants)

• G0518

  Removal with reinsertion, non-biodegradable drug delivery implants, 4 or more (services for subdermal implants)

• G0519

  Management of new patient-caregiver dyad with dementia, low complexity, for use in cmmi model

• G0520

  Management of new patient-caregiver dyad with dementia, moderate complexity, for use in cmmi model

• G0521

  Management of new patient-caregiver dyad with dementia, high complexity, for use in cmmi model

• G0522

  Management of a new patient with dementia, low complexity, for use in cmmi model

• G0523

  Management of a new patient with dementia, moderate to high complexity, for use in cmmi model

• G0524

  Management of established patient-caregiver dyad with dementia, low complexity, for use in cmmi model

• G0525

  Management of established patient-caregiver dyad with dementia, moderate complexity, for use in cmmi model

• G0526

  Management of established patient-caregiver dyad with dementia, high complexity, for use in cmmi model

• G0527

  Management of established patient with dementia, low complexity, for use in cmmi model

• G0528

  Management of established patient with dementia, moderate to high complexity, for use in cmmi model

• ---

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  Continued

• G0529

  In-home respite care, 4-hour unit, for use in cmmi model

• G0530

  Adult day center, 8-hour unit, for use in cmmi model

• G0531

  Facility-based respite, 24-hour unit, for use in cmmi model

• G0532

  Take-home supply of nasal nalmefene hydrochloride; one carton of two, 2.7 mg per 0.1 ml nasal sprays (provision of the services by a medicare-enrolled opioid treatment program);( list separately in addition to each primary code)

• G0533

  Medication assisted treatment, buprenorphine (injectable) administered on a weekly basis; weekly bundle including dispensing and/or administration, substance use counseling, individual and group therapy, and toxicology testing if performed (provision of the services by a medicare-enrolled opioid treatment program)

• G0534

  Coordinated care and/or referral services, such as to adequate and accessible community resources to address unmet health-related social needs, including harm reduction interventions and recovery support services a patient needs and wishes to pursue, which significantly limit the ability to diagnose or treat an opioid use disorder; each additional 30 minutes of services (provision of the services by a medicare-enrolled opioid treatment program); (list separately in addition to each primary code)

• G0535

  Patient navigational services, provided directly or by referral; including helping the patient to navigate health systems and identify care providers and supportive services, to build patient self-advocacy and communication skills with care providers, and to promote patient-driven action plans and goals; each additional 30 minutes of services (provision of the services by a medicare-enrolled opioid treatment program); (list separately in addition to each primary code)

• G0536

  Peer recovery support services, provided directly or by referral; including leveraging knowledge of the condition or lived experience to provide support, mentorship, or inspiration to meet oud treatment and recovery goals; conducting a person-centered interview to understand the patient's life story, strengths, needs, goals, preferences, and desired outcomes; developing and proposing strategies to help meet person-centered treatment goals; assisting the patient in locating or navigating recovery support services; each additional 30 minutes of services (provision of the services by a medicare-enrolled opioid treatment program); (list separately in addition to each primary code)

• G0537

  Administration of a standardized, evidence-based atherosclerotic cardiovascular disease (ascvd) risk assessment, 5-15 minutes, not more often than every 12 months

• G0538

  Atherosclerotic cardiovascular disease (ascvd) risk management services; clinical staff time; per calendar month

• G0539

  Caregiver training in behavior management/modification for caregiver(s) of patients with a mental or physical health diagnosis, administered by physician or other qualified health care professional (without the patient present), face-to-face; initial 30 minutes

• G0540

  Caregiver training in behavior management/modification for parent(s)/guardian(s)/caregiver(s) of patients with a mental or physical health diagnosis, administered by physician or other qualified health care professional (without the patient present), face-to-face; each additional 15 minutes

• G0541

  Caregiver training in direct care strategies and techniques to support care for patients with an ongoing condition or illness and to reduce complications (including, but not limited to, techniques to prevent decubitus ulcer formation, wound care, and infection control) (without the patient present), face-to-face; initial 30 minutes

• G0542

  Caregiver training in direct care strategies and techniques to support care for patients with an ongoing condition or illness and to reduce complications (including, but not limited to, techniques to prevent decubitus ulcer formation, wound care, and infection control) (without the patient present), face-to-face; each additional 15 minutes (list separately in addition to code for primary service) (use g0542 in conjunction with g0541)

• G0543

  Group caregiver training in direct care strategies and techniques to support care for patients with an ongoing condition or illness and to reduce complications (including, but not limited to, techniques to prevent decubitus ulcer formation, wound care, and infection control) (without the patient present), face-to-face with multiple sets of caregivers

• G0544

  Post discharge telephonic follow-up contacts performed in conjunction with a discharge from the emergency department for behavioral health or other crisis encounter, 4 calls per calendar month

• G0545

  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)

• G0546

  Interprofessional telephone/internet/electronic health record assessment and management service provided by a practitioner in a specialty whose covered services are limited by statute to services for the diagnosis and treatment of mental illness, including a verbal and written report to the patient's treating/requesting practitioner; 5-10 minutes of medical consultative discussion and review

• G0547

  Interprofessional telephone/internet/electronic health record assessment and management service provided by a practitioner in a specialty whose covered services are limited by statute to services for the diagnosis and treatment of mental illness, including a verbal and written report to the patient's treating/requesting practitioner; 11-20 minutes of medical consultative discussion and review

• G0548

  Interprofessional telephone/internet/electronic health record assessment and management service provided by a practitioner in a specialty whose covered services are limited by statute to services for the diagnosis and treatment of mental illness, including a verbal and written report to the patient's treating/requesting practitioner; 21-30 minutes of medical consultative discussion and review