Significant Medicare Billing Codes Update for 2024
The 2024 update to the Medicare Physician Fee Schedule introduced two significant billing codes, G0019 for Community Health Integration (CHI) and codes G0022 and G0023 for Principal Illness Navigation (PIN). These codes represent a major expansion in Medicare's reimbursement policies. However, despite their potential, adoption has been limited due to challenges such as unclear roles, consent issues, communication gaps, and technological hurdles, as highlighted in a 2025 analysis by Freedmen’s Health Consulting.
CHI aims to tackle "upstream drivers," like housing instability and food insecurity, which significantly impact clinical outcomes. Services under HCPCS code G0019 are provided by certified auxiliary personnel in 60-minute monthly increments under a physician’s general supervision. A 2022 Health Affairs study found these barriers to be prevalent among Medicare Advantage participants, affecting service integration.
PIN focuses on high-risk patients with conditions such as cancer and heart failure, requiring coordinated navigation support to prevent unnecessary hospitalizations. The 2026 rule expanded the scope of initiating visits for these services to include Psychiatric Diagnostic Evaluations and Health Behavior Assessments, broadening the applicability of PIN interventions.
For both CHI and PIN codes, an initial visit is necessary to commence services. Trained auxiliary personnel, including registered nurses and clinical social workers, can deliver these services without the direct presence of a physician. This flexibility allows practices to use current care coordination resources effectively, without the need for extensive new hiring.
Financially, G0019 reimburses approximately $79 for the first hour of monthly CHI services, with additional billable increments. PIN codes adhere to a similar reimbursement model, offering steady revenue opportunities for practices engaging a sufficient portion of their patient panel, thus supporting financial sustainability.
Integrating these services into practice workflows poses a primary challenge. Smoothly transitioning from physician visits to auxiliary service delivery requires practices to establish clear workflows, infrastructure, and personnel. The 2026 rule clarifies various operational aspects, indicating CMS's intent for these services to become standard in primary care management for Medicare patients.
Adopting these processes not only enhances service offerings but also aligns practices with Medicare's goals for integrated patient management. As CMS has clarified, this initiative represents a meaningful step toward comprehensive care reimbursement, urging practices to adapt to this model promptly to benefit both patients and providers.