CMS Coding Updates: HCPCS, ICD-10 Changes & more

Key Updates & Implementation Deadlines 2026

• HCPCS Level II (April 1st Prep): A quarterly update for HCPCS Level II codes was released in late February 2026 and becomes effective on April 1, 2026
• ICD-10-CM Note Changes: The CMS April update (released February 20, 2026) includes significant instructional note changes that impact how existing codes are applied, effective April 1, 2026 .
• ICD-10-PCS New Technology: Eighty new procedure codes, primarily in the “New Technology” section (e.g., gastrointestinal inspection and subcutaneous tissue device insertion), were finalized for April 1 implementation

APCM Base Code 2026 Reimbursement Rates

 Recent Specialty Focus

• Remote Monitoring (RTM/RPM): New 2026 CPT codes (e.g., 99445 and 99470) are now being actively monitored for payer adoption. These allow for shorter monitoring periods of 2–15 days within a 30-day window
• Advanced Primary Care Management (APCM): CMS introduced expanded behavioral health components for APCM, necessitating updated documentation for psychiatric care coordination as of early 2026
• The Advanced Primary Care Management (APCM) framework, which shifted away from traditional fee-for-service Chronic Care Management (CCM), saw its most significant expansion in early 2026 regarding integrated behavioral health.

CMS introduced these updates to bridge the gap between physical and mental health care, specifically targeting the management of psychiatric conditions within the primary care setting.

CMS introduced these updates to bridge the gap between physical and mental health care, specifically targeting the management of psychiatric conditions within the primary care setting.

Key Behavioral Health Components

• Psychiatric Care Coordination: Primary care clinicians can now bill for specific “collaborative care” activities that were previously excluded or required separate psychiatric specialists. This includes the regular systematic assessment of patients with behavioral health conditions using validated tools (e.g., PHQ-9 or GAD-7).
• Proactive Follow-ups: Documentation must now reflect proactive outreach for patients with high-risk psychiatric comorbidities, rather than just waiting for the patient to present with a crisis.
• Medication Management: Enhanced requirements for documenting the titration and monitoring of psychotropic medications, ensuring primary care providers are closely coordinating with any external mental health specialists

Documentation Requirements

To support the new APCM reimbursement levels in 2026, your records must clearly show:

1. Care Plan Integration: A single, unified care plan that addresses both chronic physical conditions (like diabetes) and behavioral health conditions (like depression).
2. Time-Based or Episode-Based Metrics: Documentation of the specific “episodes” of coordination between the primary care physician and behavioral health care managers.
3. Risk Stratification: Evidence that the patient was identified as “high-risk” for behavioral health complications, justifying the advanced management level.

Coding Implementation

While APCM uses a bundle of codes (primarily G-codes and specialized CPTs), the 2026 updates emphasize the use of add-on codes for behavioral health integration. These allow for higher reimbursement when a patient’s psychiatric care exceeds standard primary care oversight.

Effective January 1, 2026, CMS finalized three specific HCPCS G-codes designed as optional add-ons to the Advanced Primary Care Management (APCM) base codes.

APCM Behavioral Health Add-On Codes

These codes are reported when the same practitioner (or their auxiliary personnel under general supervision) provides behavioral health services alongside APCM in the same calendar month.

G0568: Initial month of Psychiatric Collaborative Care Model (CoCM) services.

• Description: Reflects the first month of a CoCM episode, including team-based care involving a treating practitioner, a behavioral health care manager, and a psychiatric consultant.
• 2026 Nat’l Avg. Reimbursement: Approximately $162.

G0569: Subsequent months of CoCM services.

• Description: Continuing a CoCM episode in following months for the same patient.
• 2026 Nat’l Avg. Reimbursement: Approximately $146.

G0570: General Behavioral Health Integration (BHI) services.

Description: Integrated behavioral health care management that does not require a psychiatric consultant. 2026 Nat’l Avg. Reimbursement: Approximately $58.

Updated Billing Rules for 2026

• No Time-Based Documentation: These 2026 add-ons do not require the traditional minute-counting found in standard BHI/CoCM (e.g., CPT 99492/99484). Instead, they are valued based on a “crosswalk” from those codes to support a holistic, team-based approach.
• Same-Month/Same-Practitioner Constraint: An add-on code can only be billed if the same practitioner also bills one of the APCM base codes (G0556, G0557, or G0558) for that patient in the same month.
• Consent Requirement: Providers must obtain and document patient consent specifically for integrated behavioral health services, including a disclosure of potential cost-sharing.

RHC/FQHC Unbundling: Starting in 2026, Rural Health Clinics and Federally Qualified Health Centers must unbundle behavioral health services. They will no longer use composite codes like G0512 and must instead report these individual G-codes at national non-facility rates.

APCM Base Code 2026 Rates

For reference, these are the updated national average rates for the base codes required to use the add-ons:

To successfully bill for these integrated services, your documentation must distinguish between the “Consultant Model” (CoCM) and the “General Management” (BHI) approach.

1. CoCM Documentation (G0568 – Initial Month)

Because G0568 involves a psychiatric consultant, the audit trail must show a team-based approach.

• The Registry: Documentation must confirm the patient was added to a systematic tracking registry used to monitor clinical outcomes (like PHQ-9 scores) over time.
• Consultant Review: You must document a specific consultation note or verbal summary from a qualified psychiatric consultant (MD/DO) providing treatment recommendations to the primary care provider.
• Care Manager Activity: Notes must reflect active engagement by a Behavioral Health Care Manager (e.g., social worker or RN), including the initial assessment and the creation of a proactive relapse prevention plan.
•  Outcome Measures: An initial “baseline” score from a validated tool (e.g., PHQ-9 for depression) is mandatory.

2. General BHI Documentation (G0570)

This is more flexible and does not require an external consultant, but it still requires proof of integration.

• Clinical Oversight: The record must show the primary care clinician providing continuous oversight of the patient’s behavioral health care, not just a one-off referral.
• Assessment Tools: Documentation of periodic screening using validated tools is still required to justify the service.
• Care Plan Coordination: A note stating that the behavioral health treatment (e.g., psychotherapy or medication management) was integrated into the patient’s overall medical care plan.

 FAQ 

1. What are the key CMS coding updates for 2026?

The 2026 CMS updates include HCPCS Level II changes effective April 1, ICD-10-CM instructional note revisions, new ICD-10-PCS technology codes, and expanded APCM behavioral health integration services.

2. What are the APCM behavioral health add-on codes in 2026?

CMS introduced G0568, G0569, and G0570 as optional add-on codes to APCM services for collaborative psychiatric care and behavioral health integration.

3. Do APCM behavioral health add-on codes require time-based documentation?

No. The 2026 APCM behavioral health add-on codes do not require minute-based documentation and are valued using a crosswalk methodology.

4. When do the 2026 HCPCS updates become effective?

The quarterly HCPCS Level II update becomes effective April 1, 2026.

5. What documentation is required for APCM behavioral health services?

Documentation must include care plan integration, risk stratification, behavioral health screening tools, care manager involvement, and coordination with psychiatric consultants when applicable.