G0023 HCPCS code: Principal illness navigation services by certified or trained auxiliary personnel under the direction of a physician or other practitioner, including a patient navigator; 60 minutes per calendar month, in the following activities: person-centered assessment, performed to better understand the individual context of the serious, high-risk condition. ++ conducting a person-centered assessment to understand the patient's life story, strengths, needs, goals, preferences, and desired outcomes, including understanding cultural and linguistic factors and including unmet sdoh needs (that are not separately billed). ++ facilitating patient-driven goal setting and establishing an action plan. ++ providing tailored support as needed to accomplish the practitioner's treatment plan. identifying or referring patient (and caregiver or family, if applicable) to appropriate supportive services. practitioner, home, and community-based care coordination. ++ coordinating receipt of needed services from healthcare practitioners, providers, and facilities; home- and community-based service providers; and caregiver (if applicable). ++ communication with practitioners, home-, and community-based service providers, hospitals, and skilled nursing facilities (or other health care facilities) regarding the patient's psychosocial strengths and needs, functional deficits, goals, preferences, and desired outcomes, including cultural and linguistic factors. ++ coordination of care transitions between and among health care practitioners and settings, including transitions involving referral to other clinicians; follow-up after an emergency department visit; or follow-up after discharges from hospitals, skilled nursing facilities or other health care facilities. ++ facilitating access to community-based social services (e.g., housing, utilities, transportation, food assistance) as needed to address sdoh need(s). health education- helping the patient contextualize health education provided by the patient's treatment team with the patient's individual needs, goals, preferences, and sdoh need(s), and educating the patient (and caregiver if applicable) on how to best participate in medical decision-making. building patient self-advocacy skills, so that the patient can interact with members of the health care team and related community-based services (as needed), in ways that are more likely to promote personalized and effective treatment of their condition. health care access / health system navigation. ++ helping the patient access healthcare, including identifying appropriate practitioners or providers for clinical care, and helping secure appointments with them. ++ providing the patient with information/resources to consider participation in clinical trials or clinical research as applicable. facilitating behavioral change as necessary for meeting diagnosis and treatment goals, including promoting patient motivation to participate in care and reach person-centered diagnosis or treatment goals. facilitating and providing social and emotional support to help the patient cope with the condition, sdoh need(s), and adjust daily routines to better meet diagnosis and treatment goals. leverage knowledge of the serious, high-risk condition and/or lived experience when applicable to provide support, mentorship, or inspiration to meet treatment goals

G0023 is the HCPCS Level II code for principal illness navigation services by certified or trained auxiliary personnel under the direction of a physician or other practitioner, including a patient navigator; 60 minutes per calendar month, in the following activities: person-centered assessment, performed to better understand the individual context of the serious, high-risk condition. ++ conducting a person-centered assessment to understand the patient's life story, strengths, needs, goals, preferences, and desired outcomes, including understanding cultural and linguistic factors and including unmet sdoh needs (that are not separately billed). ++ facilitating patient-driven goal setting and establishing an action plan. ++ providing tailored support as needed to accomplish the practitioner's treatment plan. identifying or referring patient (and caregiver or family, if applicable) to appropriate supportive services. practitioner, home, and community-based care coordination. ++ coordinating receipt of needed services from healthcare practitioners, providers, and facilities; home- and community-based service providers; and caregiver (if applicable). ++ communication with practitioners, home-, and community-based service providers, hospitals, and skilled nursing facilities (or other health care facilities) regarding the patient's psychosocial strengths and needs, functional deficits, goals, preferences, and desired outcomes, including cultural and linguistic factors. ++ coordination of care transitions between and among health care practitioners and settings, including transitions involving referral to other clinicians; follow-up after an emergency department visit; or follow-up after discharges from hospitals, skilled nursing facilities or other health care facilities. ++ facilitating access to community-based social services (e.g., housing, utilities, transportation, food assistance) as needed to address sdoh need(s). health education- helping the patient contextualize health education provided by the patient's treatment team with the patient's individual needs, goals, preferences, and sdoh need(s), and educating the patient (and caregiver if applicable) on how to best participate in medical decision-making. building patient self-advocacy skills, so that the patient can interact with members of the health care team and related community-based services (as needed), in ways that are more likely to promote personalized and effective treatment of their condition. health care access / health system navigation. ++ helping the patient access healthcare, including identifying appropriate practitioners or providers for clinical care, and helping secure appointments with them. ++ providing the patient with information/resources to consider participation in clinical trials or clinical research as applicable. facilitating behavioral change as necessary for meeting diagnosis and treatment goals, including promoting patient motivation to participate in care and reach person-centered diagnosis or treatment goals. facilitating and providing social and emotional support to help the patient cope with the condition, sdoh need(s), and adjust daily routines to better meet diagnosis and treatment goals. leverage knowledge of the serious, high-risk condition and/or lived experience when applicable to provide support, mentorship, or inspiration to meet treatment goals. In 2024 Medicare paid an average of $61.78 per service for G0023 across 4,303 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. The NCCI unit limit is 1 per day on outpatient hospital claims. In 2024, about 416 clinicians billed Medicare for G0023 for 2,126 beneficiaries; Florida, California, Louisiana accounted for 73% of services.

Code details

Who bills G0023 (2024)

Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.

Medicare utilization for G0023, 2024–2024

States with the most G0023 services (2024)

NCCI unit limits (MUE)

What changed for G0023

• 2024-01-01: G0023 added to HCPCS Level II
• Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01

Frequently asked questions

What is HCPCS code G0023?

G0023 is the HCPCS Level II code for principal illness navigation services by certified or trained auxiliary personnel under the direction of a physician or other practitioner, including a patient navigator; 60 minutes per calendar month, in the following activities: person-centered assessment, performed to better understand the individual context of the serious, high-risk condition. ++ conducting a person-centered assessment to understand the patient's life story, strengths, needs, goals, preferences, and desired outcomes, including understanding cultural and linguistic factors and including unmet sdoh needs (that are not separately billed). ++ facilitating patient-driven goal setting and establishing an action plan. ++ providing tailored support as needed to accomplish the practitioner's treatment plan. identifying or referring patient (and caregiver or family, if applicable) to appropriate supportive services. practitioner, home, and community-based care coordination. ++ coordinating receipt of needed services from healthcare practitioners, providers, and facilities; home- and community-based service providers; and caregiver (if applicable). ++ communication with practitioners, home-, and community-based service providers, hospitals, and skilled nursing facilities (or other health care facilities) regarding the patient's psychosocial strengths and needs, functional deficits, goals, preferences, and desired outcomes, including cultural and linguistic factors. ++ coordination of care transitions between and among health care practitioners and settings, including transitions involving referral to other clinicians; follow-up after an emergency department visit; or follow-up after discharges from hospitals, skilled nursing facilities or other health care facilities. ++ facilitating access to community-based social services (e.g., housing, utilities, transportation, food assistance) as needed to address sdoh need(s). health education- helping the patient contextualize health education provided by the patient's treatment team with the patient's individual needs, goals, preferences, and sdoh need(s), and educating the patient (and caregiver if applicable) on how to best participate in medical decision-making. building patient self-advocacy skills, so that the patient can interact with members of the health care team and related community-based services (as needed), in ways that are more likely to promote personalized and effective treatment of their condition. health care access / health system navigation. ++ helping the patient access healthcare, including identifying appropriate practitioners or providers for clinical care, and helping secure appointments with them. ++ providing the patient with information/resources to consider participation in clinical trials or clinical research as applicable. facilitating behavioral change as necessary for meeting diagnosis and treatment goals, including promoting patient motivation to participate in care and reach person-centered diagnosis or treatment goals. facilitating and providing social and emotional support to help the patient cope with the condition, sdoh need(s), and adjust daily routines to better meet diagnosis and treatment goals. leverage knowledge of the serious, high-risk condition and/or lived experience when applicable to provide support, mentorship, or inspiration to meet treatment goals. Short descriptor: "Pin service 60m per month".

How much does Medicare pay for G0023?

In 2024, the average Medicare payment was $61.78 per service (average allowed $77.75).

Does Medicare cover G0023?

Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.

How many units of G0023 can be billed per day?

1 on outpatient hospital claims; 1 on practitioner claims (NCCI medically unlikely edits).

Related G00 codes

• G0008 — Administration of influenza virus vaccine
• G0009 — Administration of pneumococcal vaccine
• G0010 — Administration of hepatitis b vaccine
• G0011 — Individual counseling for pre-exposure prophylaxis (prep) by physician or qualified health care professional (qhp) to prevent human immunodeficiency virus (HIV), includes hiv risk assessment (initial or continued assessment of risk), hiv risk reduction and medication adherence, 15-30 minutes
• G0012 — Injection of pre-exposure prophylaxis (prep) drug for hiv prevention, under skin or into muscle
• G0013 — Individual counseling for pre-exposure prophylaxis (prep) by clinical staff to prevent human immunodeficiency virus (HIV), includes: hiv risk assessment (initial or continued assessment of risk), hiv risk reduction and medication adherence
• G0017 — Psychotherapy for crisis furnished in an applicable site of service (any place of service at which the non-facility rate for psychotherapy for crisis services applies, other than the office setting); first 60 minutes
• G0018 — Psychotherapy for crisis furnished in an applicable site of service (any place of service at which the non-facility rate for psychotherapy for crisis services applies, other than the office setting); each additional 30 minutes (list separately in addition to code for primary service)
• G0019 — Community health integration services performed by certified or trained auxiliary personnel, including a community health worker, under the direction of a physician or other practitioner; 60 minutes per calendar month, in the following activities to address social determinants of health (sdoh) need(s) that are significantly limiting the ability to diagnose or treat problem(s) addressed in an initiating visit: person-centered assessment, performed to better understand the individualized context of the intersection between the sdoh need(s) and the problem(s) addressed in the initiating visit. ++ conducting a person-centered assessment to understand patient's life story, strengths, needs, goals, preferences and desired outcomes, including understanding cultural and linguistic factors and including unmet sdoh needs (that are not separately billed). ++ facilitating patient-driven goal-setting and establishing an action plan. ++ providing tailored support to the patient as needed to accomplish the practitioner's treatment plan. practitioner, home-, and community-based care coordination. ++ coordinating receipt of needed services from healthcare practitioners, providers, and facilities; and from home- and community-based service providers, social service providers, and caregiver (if applicable). ++ communication with practitioners, home- and community-based service providers, hospitals, and skilled nursing facilities (or other health care facilities) regarding the patient's psychosocial strengths and needs, functional deficits, goals, preferences, and desired outcomes, including cultural and linguistic factors. ++ coordination of care transitions between and among health care practitioners and settings, including transitions involving referral to other clinicians; follow-up after an emergency department visit; or follow-up after discharges from hospitals, skilled nursing facilities or other health care facilities. ++ facilitating access to community-based social services (e.g., housing, utilities, transportation, food assistance) to address the sdoh need(s). health education- helping the patient contextualize health education provided by the patient's treatment team with the patient's individual needs, goals, and preferences, in the context of the sdoh need(s), and educating the patient on how to best participate in medical decision-making. building patient self-advocacy skills, so that the patient can interact with members of the health care team and related community-based services addressing the sdoh need(s), in ways that are more likely to promote personalized and effective diagnosis or treatment. health care access / health system navigation. ++ helping the patient access healthcare, including identifying appropriate practitioners or providers for clinical care and helping secure appointments with them. facilitating behavioral change as necessary for meeting diagnosis and treatment goals, including promoting patient motivation to participate in care and reach person-centered diagnosis or treatment goals. facilitating and providing social and emotional support to help the patient cope with the problem(s) addressed in the initiating visit, the sdoh need(s), and adjust daily routines to better meet diagnosis and treatment goals. leveraging lived experience when applicable to provide support, mentorship, or inspiration to meet treatment goals
• G0022 — Community health integration services, each additional 30 minutes per calendar month (list separately in addition to g0019)
• G0024 — Principal illness navigation services, additional 30 minutes per calendar month (list separately in addition to g0023)
• G0027 — Semen analysis; presence and/or motility of sperm excluding huhner

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Next steps

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Sources: CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.

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