HCPCS code G0023 reflects Principal Illness Navigation (PIN) services. It includes 60 minutes of a healthcare session covering high risk conditions leading to hospitalization or death. PIN Services also involve patient conditions requiring regular monitoring, adjustment of a previous disease care plan and medication.
In 2024, CMS introduced these codes to streamline the patient care and reimbursement mechanism. These codes come under the family of Healthcare Common Procedural Coding System.
G0023 cpt code: Overview
CMS developed PIN Services to help patients receive treatment for risky conditions. PIN Services are a type of treatment that experts can perform with professional physician services to educate patients about their medical conditions and offer a sustainable treatment plan.
Patient illness navigation includes two types
- General PIN Services: Conditions such as chronic obstructive pulmonary disease, cancer and heart failure.
- Principal illness navigation peer support (PIN-PS) services: Includes high risk behavioural health-related conditions.
Patient illness navigation services offer additional support to the patients with high risk conditions, leading to immediate hospitalization or death.
G0023 vs G0024
Understanding G0023 vs G0024 is simple when you look at the time structure.
| Code | Basic role | Time |
| G0023 | Base PIN service | 60 minutes per month |
| G0024 | Additional PIN service | Each additional 30 minutes |
G0023 cpt code is the starting code. G0024 is used when additional qualifying PIN time is provided beyond the base service.
For example, suppose a patient receives 60 minutes of qualifying navigation during the month. The billing team would look at G0023 cpt code
If the patient receives another 30 minutes of qualifying service beyond the base amount, G0024 may apply, assuming all applicable requirements are met.
However, billing staff should not treat the codes as simple stopwatch codes. The services must be medically necessary, properly documented, and furnished according to Medicare’s PIN rules. CMS also states that the services should be given according to the patient’s individual needs.
PIN Billing Requirements
The main PIN billing requirements involve patient eligibility, an initiating visit, consent, qualified personnel, supervision, documentation, and billing frequency.
1. Patient Must Qualify
The patient must have one serious, high-risk condition that meets CMS’s requirements. The condition should be expected to last at least three months. It must create a significant risk of hospitalization, nursing home placement, acute exacerbation, functional decline, or death. Moreover, it must also require development, monitoring, or revision of a disease-specific care plan.
2. Initial Visit Is Required
A PIN initiating visit must occur before PIN services are billed.
The initiating visit can generally be an appropriate E/M visit performed by the practitioner who will bill for the PIN services. During that visit, the practitioner creates an appropriate treatment plan for the high-risk condition and includes PIN services.
An Annual Wellness Visit can also qualify when the same practitioner identifies a qualifying high-risk condition. Certain behavioral health services can also serve as the initiating visit when the applicable requirements are met.
An emergency department or inpatient visit cannot serve as the PIN initiating visit when the practitioner will not also provide the subsequent PIN services. The initiating visit is billed separately when all requirements for that visit are met.
3. Patient Consent Is Required
CMS requires consent before or when PIN services begin. Consent must also be obtained annually. If the billing practitioner changes, new consent is required.
Consent may be written or verbal. However, the consent must be documented in the patient’s medical record. This is a common area where billing teams should check the chart carefully before submitting a claim.
4. Qualified Auxiliary Personnel
PIN services can be provided by auxiliary personnel under the general supervision of the billing practitioner. CMS requires applicable state licensure or certification requirements to be followed.
Where a state does not have specific requirements, auxiliary personnel must have appropriate training or certification in areas such as:
- Patient and family communication
- Relationship building
- Patient capacity building
- Care coordination
- System navigation
- Patient advocacy
- Community assessment
- Professional conduct
- Knowledge of the serious condition being addressed
This means a navigator cannot perform unrelated administrative work and have that time reported as PIN.
Patient Navigator Reimbursement
Patient navigator reimbursement is handled through the Medicare Physician Fee Schedule when the applicable requirements are met.
The navigator does not submit a separate Medicare claim simply because they performed the navigation work. Instead, the eligible billing practitioner reports the appropriate PIN code.
The actual Medicare reimbursement amount can vary. CMS explains that PIN payment rates can differ by year and between facility and non-facility settings. The applicable rate should therefore be checked using the current Medicare Physician Fee Schedule and the relevant geographic area.
This is important because billing teams should avoid using one national dollar amount as a permanent reimbursement figure.
The CMS PFS Look-Up Tool provides current Medicare payment information, including payment policies and geographic payment information.
Patient Navigator Reimbursement
Patient navigator reimbursement for the G0023 CPT code is handled through the Medicare Physician Fee Schedule when the applicable requirements are met. The navigator does not submit a separate Medicare claim simply because they performed the navigation work. Instead, the eligible billing practitioner reports the appropriate PIN code.
The actual Medicare reimbursement amount can vary. CMS explains that PIN payment rates can differ by year and between facility and non-facility settings. The applicable rate should therefore be checked using the current Medicare Physician Fee Schedule and the relevant geographic area.
This is important because billing teams should avoid using one national dollar amount as a permanent reimbursement figure.
The CMS PFS Look-Up Tool provides current Medicare payment information, including payment policies and geographic payment information.
Final Takeaway
The G0023 CPT code is an important Medicare code for Principal Illness Navigation services. It supports navigation for patients with serious, high-risk conditions that require ongoing disease-specific care.
Successful billing depends on more than recording 60 minutes. The patient must meet the eligibility requirements, an appropriate initiating visit must occur, qualified personnel must provide the service, and the billing practitioner must meet the applicable supervision and incident-to requirements.
The medical record should clearly connect the navigator’s work with the patient’s treatment plan. Billing teams should also watch the monthly frequency rule and avoid double-counting time with other care management services.
At Mediremote, strong medical billing starts with accurate coding, complete documentation, and careful review of Medicare requirements. A clear understanding of PIN rules can help billing teams reduce avoidable denials and support cleaner claims.
FAQs
1. What is the G0023 CPT code?
G0023 is a Medicare HCPCS code for 60 minutes of Principal Illness Navigation services for eligible patients with serious, high-risk conditions.
2. Who can bill G0023?
An eligible physician or practitioner bills G0023, while qualified auxiliary personnel may provide navigation services under the required general supervision.
3. Who qualifies for G0023 PIN services?
Patients generally need a serious, high-risk condition expected to last at least three months and require a disease-specific care plan.
4. What are the G0023 billing requirements?
Requirements include an initiating visit, patient consent, qualified personnel, appropriate supervision, medical necessity, and documentation supporting the navigation services provided.
5. What is the difference between G0023 and G0024?
G0023 covers the base 60-minute monthly PIN service, while G0024 reports each additional 30 minutes of qualifying navigation services.
6. How does patient navigator reimbursement work?
Patient navigator reimbursement occurs through the eligible billing practitioner, rather than directly to auxiliary personnel, when Medicare requirements are met.