G0024 Description, Billing Rules, & Use Cases

HCPCS G0024 is an add-on code used to report each additional 30 minutes of Principal Illness Navigation (PIN) services delivered by certified or trained auxiliary personnel under the general supervision of a billing physician or qualified health care professional (QHP). G0024 must be billed in conjunction with G0023, which covers the first 60 minutes of services provided within the same calendar month. Accurate time tracking and detailed documentation are required to ensure compliance.

What is HCPCS Code G0024?

G0024 is an add-on HCPCS code used to report each additional 30 minutes of Principal Illness Navigation (PIN) services furnished by certified or trained auxiliary personnel under the direction of a physician or other practitioner. It must be listed separately in addition to G0023 (the first 60 minutes in the same calendar month) and cannot be billed on its own. PIN activities include person-centered assessment, navigation and coordination across clinical and community settings, addressing SDOH barriers, and patient/caregiver support under general supervision.

Key elements of the G0024 service include:

Add-on to G0023; cannot stand alone — list separately in addition to the base code.
Covers each additional 30 minutes of PIN services in the same calendar month after the first 60 minutes.
Delivered by certified/trained auxiliary personnel (e.g., patient navigators) under general supervision of the billing practitioner.
Services may include:
- Person-centered assessment (goals, cultural/linguistic factors, unmet SDOH needs)
- Tailored goal setting and action planning
- Facilitating access to practitioners, specialists, and social services
- Practitioner/home/community-based care coordination and care transitions (e.g., post-discharge)
- Health-system navigation, behavioral change support, and patient/caregiver education
- Social/emotional support and, when appropriate, leveraging relevant lived experience
Documentation in the medical record at the billing provider’s office must reflect time and activities performed.
May be reported with other care-management codes (e.g., CCM/PCM/CoCM) only when services are distinct and not duplicative, with separate documentation.

G0024 Time Thresholds and Code Combinations

The following scenarios outline how to correctly report HCPCS code G0024 based on the total time spent providing Principal Illness Navigation (PIN) services within a single calendar month. Since G0023 covers the first 60 minutes, G0024 is used to report each additional 30-minute increment of qualifying services delivered by certified or trained auxiliary personnel under general supervision. If G0024 is billed alongside other care management services—such as CCM or PCM—documentation must clearly demonstrate that the services are distinct, non-overlapping, and separately recorded to ensure CMS compliance.

Important to Note:

G0024 covers each additional 30 minutes of qualifying PIN services in the same calendar month
G0024 must follow an initial 60 minutes of documented services reported under G0023
Cannot bill G0024 unless the full 30-minute increment is met — no rounding up
Services must be delivered by auxiliary personnel under the general supervision of the billing practitioner

Table titled “G0024 Time Thresholds and Code Combinations” with four columns: Scenario, Code(s) to Report, Who Provides the Care, and Explanation. The first row shows that the first 60 minutes of Principal Illness Navigation services in a calendar month should be reported using G0023, delivered by certified or trained auxiliary personnel under general supervision, capturing the initial 60 minutes. The second row shows that each additional 30 minutes of PIN services beyond the initial 60 minutes should be reported using G0024, provided by the same personnel, as an add-on code for each extra 30 minutes. The third row shows that if less than 30 minutes of additional service time is provided after the first 60 minutes, G0024 should not be reported because the minimum threshold is not met. The fourth row shows that G0023 and G0024 may be reported alongside CCM, PCM, or CoCM codes when auxiliary personnel deliver PIN services and clinical staff deliver care management services, but documentation must show that the services are distinct, non-overlapping, and separately recorded.

When to Use G0024: Common Scenarios and Use Cases

G0023 is used to report the first 60 minutes of Principal Illness Navigation (PIN) services provided by certified or trained auxiliary personnel under the general supervision of a billing physician or other qualified health care professional. These services help patients with serious, high-risk, or complex conditions navigate their care plans, access resources, and coordinate appointments. If additional time is required beyond the initial 60 minutes, report G0024 for each additional 30-minute increment within the same calendar month.

Extended Heart Failure Management

Dementia Caregiver Coordination

Complex COPD Care Navigation and Resource Alignment

Extended Heart Failure Management and Resource Coordination

A patient navigator (certified auxiliary personnel) under general supervision:

Performs a detailed person-centered assessment to uncover care gaps and patient goals
Arranges a cardiology stress test and coordinates home-based vitals monitoring
Connects the patient with a low-sodium meal delivery program to support recovery
Follows up with the primary care team to integrate updates into the care plan and documents all activities

Total staff time (auxiliary personnel): 90 minutes
Billing: G0023 + G0024

Home healthcare nurse measuring blood pressure of smiling senior woman, highlighting in-home care services and chronic condition monitoring for older adults

Dementia Caregiver Coordination and Resource Support

A patient navigator (certified auxiliary personnel) under general supervision:

Assesses patient and caregiver needs, cultural preferences, and safety concerns
Coordinates neurology and primary-care visits while preparing the caregiver for next steps
Connects the family to respite care, caregiver support groups, and community resources
Communicates updates to the supervising practitioner and documents the entire interaction

Total staff time (auxiliary personnel): 120 minutes
Billing: G0023 + 2×G0024

Older adult reviews care plan with nurse practitioner during Chronic Care Management session

Complex COPD Care Navigation and Resource Alignment

A patient navigator (certified auxiliary personnel) under general supervision:

Performs a person-centered assessment and identifies SDOH barriers affecting adherence
Coordinates pulmonary rehabilitation and schedules follow-up with the pulmonologist
Secures home oxygen supply and verifies insurance coverage requirements
Connects the patient with community-based transportation and health resources

Total staff time (auxiliary personnel): 90 minutes
Billing: G0023 + G0024

Elderly man using nebulizer mask while seated at home, illustrating chronic respiratory care, COPD management, and in-home therapeutic support

G0024 Billing Requirements and Eligibility

To compliantly report G0024, auxiliary personnel must provide at least 30 additional minutes of qualifying PIN services beyond the initial 60 minutes billed under G0023 in the same calendar month. G0024 cannot be billed independently and requires strict adherence to eligibility and documentation standards.

Patient Eligibility Criteria

Patient must have a serious, high-risk, or complex condition such as:
- Cancer
- Chronic obstructive pulmonary disease (COPD)
- Dementia or other cognitive impairment
- Congestive heart failure (CHF)
- HIV/AIDS or severe mental illness
- Substance use disorder (SUD)
Must require ongoing care coordination and help navigating care plans, resources, or community-based services
Services must be furnished by certified or trained auxiliary personnel authorized under state law
Practitioner oversight must meet general supervision requirements — the billing provider does not need to be present but must be available for direction

Time and Service Threshold

G0024 covers each additional 30 minutes of qualifying PIN services in the same calendar month
G0024 must follow an initial 60 minutes of documented services reported under G0023
Cannot bill G0024 unless the full 30-minute increment is met — no rounding up
Services must be delivered by auxiliary personnel under the general supervision of the billing practitioner

Documentation Requirements

The clinical record must include:

Total cumulative PIN time for the month, including G0023 + G0024 minutes
Breakdown of tasks performed during the additional 30-minute session(s), such as:
- Care coordination and appointment scheduling
- Connecting patients to social services or resources
- Addressing barriers related to transportation, medication access, or cost
- Patient or caregiver education and follow-up support
Coordination notes showing communication with the supervising physician or QHP
Updates to patient status, care goals, or action plans

Billing Limits and Combinations

Cannot bill G0024 without G0023 — this is an add-on code only
Multiple G0024 units may be billed in the same calendar month if each full 30-minute threshold is met
May be reported alongside CCM, PCM, or CoCM codes only if:
- Services are distinct and non-overlapping
- Documentation supports separate activities for each code
Must not bill G0024 if total additional service time is less than 30 minutes

G0024 Billing Documentation Checklist

To compliantly bill G0024, the following must be clearly documented in the patient’s chart:

Confirmation that G0023 was reported for the same calendar month (G0024 cannot be billed independently)
Verification that at least 30 additional minutes of eligible Principal Illness Navigation (PIN) services were provided beyond the initial 60 minutes billed under G0023
Total cumulative time spent delivering PIN services, including G0023 + G0024 minutes
Description of the services performed during the additional 30-minute unit(s), which may include:
- Person-centered assessments to identify goals and care gaps
- Scheduling and coordinating follow-up appointments
- Connecting patients with specialists, hospitals, or community resources
- Addressing social determinants of health (e.g., housing, transportation, cost barriers)
- Providing patient and caregiver education and navigation support
Documentation of communication and alignment with the supervising physician or QHP
Credentials and role of the auxiliary personnel delivering the services
Evidence that services build upon the care coordination activities delivered under G0023 and are non-duplicative

Common G0024 Billing Mistakes (and How to Avoid Them)

❌ Billing G0024 Without G0023

G0024 is an add-on code and cannot be billed independently. Always confirm G0023 has been reported first.

❌ Reporting G0024 Without Completing 30 Full Minutes

You must document at least 30 additional minutes of qualifying services beyond G0023 before billing G0024. Anything less is not reimbursable.

❌ Overlapping G0024 Time With G0023

Ensure time attributed to G0024 is separate from the base 60 minutes billed under G0023. Overlapping time will trigger denials.

❌ Double Billing With CCM, PCM, or CoCM Codes

G0024 may be reported alongside other care management codes only if services are distinct and separately documented.

❌ Missing Documentation of Additional Service Activities

The patient record must clearly document the extra 30-minute increment(s), tasks performed, patient/caregiver engagement, and coordination notes.

❌ Billing More Units Than Documented

You may report multiple G0024 units only if the documented time supports them. If 45 minutes were provided beyond G0023, bill one unit only.