Summary & Overview
HCPCS G9038: Specialist Co-Management and Care Planning
HCPCS Level II code G9038 denotes co-management services in which a specialist takes a joint role in managing a new diagnosis or an acute exacerbation or stabilization of an existing condition expected to persist for at least three months. The code captures establishment, implementation, revision, or monitoring of a comprehensive care plan and requires ongoing communication and coordination between co-managing clinicians. Nationally, co-management codes like G9038 matter because they reflect multidisciplinary care models that can improve care continuity for complex or chronic conditions and influence billing, documentation, and payer authorization practices.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical and billing intent of G9038, typical sites of service and service type, and a summary of how major payers and Medicare approach coverage and reimbursement for co-management services. The publication also highlights common billing modifiers and implementation considerations, and identifies where input data is not available. This provides clinicians, billing staff, and policy analysts with a practical reference for documentation expectations and payer engagement related to co-management services under G9038.
Billing Code Overview
HCPCS Level II code G9038 describes co-management services for patients with a new diagnosis or acute exacerbation or stabilization of an existing condition that may benefit from joint care planning. The code applies when a specialist assumes a co-management role for a condition expected to last at least three months and when a comprehensive care plan is established, implemented, revised, or monitored in partnership with co-managing clinicians. The service includes ongoing communication and care coordination between clinicians who are jointly furnishing care.
Service type: Co-management and care coordination
Typical site of service: Outpatient specialty clinics, physician offices, and other ambulatory care settings
Clinical & Coding Specifications
Clinical Context
A 72-year-old male with a history of congestive heart failure and chronic obstructive pulmonary disease presents to a cardiology clinic after hospital discharge for worsening heart failure with volume overload. The cardiologist assumes a co-management role with the patient’s primary care physician to address a new acute exacerbation and to stabilize the chronic condition. The specialists and primary clinician establish a comprehensive care plan that includes medication adjustments, heart failure clinic follow-up, home health nursing coordination, and scheduled communication for monitoring over the next several months.
This service is provided when a condition is new or has acutely exacerbated and is expected to last at least three months and to benefit from joint care planning. Typical workflow: the co-managing specialist documents the new diagnosis or exacerbation, confirms the need for joint management, participates in creation and revision of a comprehensive care plan with the primary clinician, implements agreed interventions (medication changes, referrals, tests), and engages in ongoing communication and care coordination (telephone, secure messaging, shared notes, or formal care conferences) with the co-managing clinicians. Encounters include review of the patient’s prior records, problem-focused or comprehensive assessments as appropriate, documented communication notes, and documented monitoring or revision of the plan over time.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services |