Group Therapy Documentation and Billing Guide for EHR Systems (2026)

1. Group Therapy CPT and HCPCS Codes

Group therapy billing relies on a small set of codes. Selecting the correct code depends on the type of group, the provider's credentials, and the payer.

Primary codes

Code selection decision tree

• Mental health group therapy by a licensed mental health professional: 90853
• SUD group counseling billed to Medicaid: check your state manual -- may require H0005 or accept 90853
• Multi-family group with patients and family members: 90849
• Psychoeducational group (skills training, no psychotherapy): typically not billable under 90853 -- may use H0005, H2014 (skills training), or other HCPCS codes depending on payer and state

For a complete reference on mental health billing codes, including individual therapy and evaluation codes, see the mental health billing codes guide.

2. Documentation Requirements by Payer

While documentation fundamentals are consistent across payers, specific requirements vary. Below are the general standards followed by payer-specific considerations.

Universal documentation elements (all payers)

• Date and time of service: Start and end time of the group session
• Duration: Total session length (typically 45-90 minutes)
• Location/place of service: Facility name or telehealth designation
• Group topic and therapeutic focus: Theme, clinical objectives addressed
• Interventions used: CBT, DBT, motivational interviewing, psychoeducation, process group, etc.
• Participant list: Names of all attendees for that session
• Provider signature and credentials: Name, credential, license number, date signed
• Individualized patient section: Specific to each participant (see next section)

Medicare-specific requirements

• Medical necessity must be established in the note, linking the group to the patient's diagnosed condition
• Individual participant names must appear on each claim -- missing names is a specific Medicare denial trigger
• The rendering provider must be a Medicare-enrolled provider eligible to bill 90853 (psychiatrist, psychologist, LCSW, or other qualified provider depending on state and CMS rules)
• 90853 is not time-based -- do not attempt to bill multiple units per session

Medicaid-specific requirements

• Requirements vary significantly by state and managed care organization
• Some states mandate a specific group size maximum (commonly 12 participants)
• Some states require H0005 for SUD group counseling rather than 90853
• Prior authorization may be required after a set number of sessions (e.g., after 20 group sessions in some state plans)
• Treatment plan must be active and specify group therapy as a modality with frequency and duration

Commercial payer considerations

• Most follow Medicare documentation standards but may impose additional requirements
• Some require pre-authorization for group therapy as a modality (not just the diagnosis)
• Network contracts may specify minimum session duration (commonly 45 minutes)
• Some payers apply visit limits that combine individual and group sessions into a single annual cap

3. Individual vs Group Note Structure

The correct documentation structure for group therapy combines a shared group summary with individualized patient-specific content. This is the area where most documentation failures occur and where audit risk is highest.

Recommended note structure

What to avoid

• Cloned notes: Identical patient-specific sections across multiple participants. This is the number-one audit trigger for group therapy documentation and will result in denials and potential recoupment.
• Generic participation language: Phrases like "patient participated appropriately" or "patient was engaged" without specific behavioral observations provide no clinical value and do not meet medical necessity standards.
• Missing treatment plan linkage: Each individualized section must connect to that patient's specific treatment plan goals. Auditors verify that group therapy is a planned modality addressing documented objectives.
• Batch-signing without review: Signing multiple group notes without reviewing individualized content. If audited, the signing provider is responsible for everything in the note.

4. Attendance Tracking

Accurate attendance tracking is both a clinical requirement and a billing prerequisite. Every group session must have a documented list of who attended, and only patients who were present can be billed.

Attendance documentation requirements

• Full name of each participant present for the session
• Notation of any participants who arrived late or left early (document arrival/departure times)
• Notation of any scheduled participants who did not attend (no-shows should not be billed)
• Total number of participants in the group
• The attendance record must match the claims submitted -- if 8 patients attended, exactly 8 claims should be submitted

Partial attendance

If a patient arrives late or leaves early, you can still bill 90853 (since it is not time-based) as long as the patient participated in a meaningful portion of the session. Document the actual time the patient was present and their participation during that time. Some payers may have minimum attendance duration thresholds -- check your contracts.

EHR attendance workflow

Your EHR should support attendance capture at the point of service -- marking patients present, absent, or partially attended before the clinician writes notes. This prevents billing for no-shows and ensures the attendance record and claims are synchronized. Systems that separate attendance tracking from note creation introduce reconciliation risk.

5. Co-Signing Requirements

Co-signing applies when the provider facilitating the group session is a trainee, intern, or provisionally licensed clinician working under supervision. The requirements are set by state licensing boards, payer policies, and sometimes organizational policy.

When co-signatures are required

• Trainees and interns: Pre-licensure students completing practicum or internship hours must have all notes co-signed by their licensed supervisor.
• Provisionally licensed clinicians: Clinicians with provisional, associate, or conditional licenses (e.g., LPC-A, LMSW, LMHC-P) typically require co-signatures on all clinical documentation.
• New staff probationary period: Some organizations and state Medicaid programs require co-signatures for new clinical staff during an initial period (commonly 90 days).
• Certified addiction counselors: In some states, certified addiction counselors (CAC, CADC) operating under the supervision of a licensed clinician require co-signatures.

Co-signature timelines

Most payers and state programs require notes to be submitted to the supervisor within 3 business days and co-signed within 7-10 business days of the service date. Late co-signatures are an audit finding and can result in claim recoupment. Configure your EHR to surface unsigned notes in a supervisor queue with aging alerts.

Co-signer clinical knowledge requirement

The co-signing supervisor should have direct knowledge of the services provided. Signing notes for services the supervisor did not observe or discuss with the treating clinician creates liability. Best practice is for the supervisor to review the note with the clinician before signing, particularly for complex cases.

6. Common Denial Reasons and Prevention

Group therapy claims face denial rates that are higher than individual therapy, in part because the documentation requirements are more complex and more frequently incomplete. Mental health claims overall are denied at rates approximately 85% higher than comparable medical services. Understanding the specific denial triggers for group therapy allows you to build prevention into your workflow.

Top group therapy denial reasons

For a broader denial prevention framework, see the behavioral health revenue cycle guide and the charge capture and coding accuracy guide.

7. EHR Features Needed for Group Therapy

Group therapy documentation is one of the areas where EHR design matters most. A system that forces clinicians to create individual notes from scratch for each group participant -- rather than supporting a shared-plus-individualized workflow -- creates documentation burden that leads to shortcuts, cloned notes, and compliance failures.

Essential EHR capabilities

• Group session creation: Ability to schedule a group session, assign a participant roster, and generate linked documentation records for all attendees in one action.
• Shared group note template: A single shared section (topic, interventions, group dynamics) that populates into each participant's record without requiring re-entry.
• Individualized note section per participant: A required, separate text area for each participant that cannot be left blank or auto-filled from another participant's content.
• Treatment plan goal pull-in: The ability to display each patient's active treatment plan goals alongside the note entry area so clinicians can document against specific objectives.
• Attendance management: Real-time attendance capture (present, absent, late arrival, early departure) that controls which patients generate notes and claims.
• Clone detection or prevention: Alerts or blocks when individualized sections contain identical text across two or more participants in the same group.
• Co-signature workflow: Automatic routing of notes to the appropriate supervisor with aging alerts for unsigned notes approaching payer deadlines.
• Integrated charge capture: Automatic generation of the correct billing code (90853, H0005, 90849) based on group type, payer, and provider credentials, with modifier application for telehealth sessions.
• Billing rule enforcement: Prevention of duplicate charges (more than one unit of 90853 per patient per day) and claims for patients not marked as attended.

Evaluating EHR group therapy workflows

When evaluating EHR platforms, ask vendors to demonstrate the full group therapy workflow from scheduling through claim submission. Specifically test: How many clicks does it take to document a 10-person group? Can the clinician see each patient's treatment plan goals while writing the individualized section? What happens if the clinician tries to submit without individualized content? How does the system handle a patient who arrives 15 minutes late?

Compare platforms on the behavioral health EHR comparison page to see which systems handle group note workflows natively versus requiring workarounds.

8. Time-Based Billing Considerations

CPT 90853 is not a time-based code. You bill one unit per patient per session regardless of whether the session lasts 45 minutes or 90 minutes. This is a critical distinction from many other behavioral health codes that use time-based billing (such as individual psychotherapy codes 90834 and 90837).

Key time-related rules

• One unit maximum: 90853 can only be billed once per patient per day, even if the patient attends two separate group sessions on the same day.
• Typical session duration: Most payers expect group sessions to be 45-90 minutes. Sessions shorter than 45 minutes may trigger review. Document actual start and end times.
• H0005 may be time-based: Unlike 90853, some state Medicaid programs bill H0005 in 15-minute increments or hourly units. Check your specific state Medicaid provider manual for unit definitions.
• Same-day individual and group therapy: A patient can receive both individual therapy (e.g., 90834) and group therapy (90853) on the same day if both are medically necessary and separately documented. Use Modifier 59 on the second service if required by the payer to indicate a distinct service.

9. Telehealth Group Therapy Billing

Telehealth group therapy became widely reimbursable during the COVID-19 public health emergency and coverage has been maintained by most payers into 2026. However, modifier and place-of-service requirements differ between payers.

Medicare telehealth group therapy billing

• Place of Service (POS): Use POS 10 if the patient is at home, POS 02 if the patient is at an approved telehealth originating site.
• Modifier: Append Modifier 95 to indicate a synchronous telehealth service. Medicare no longer uses Modifier GT.
• Reimbursement: Medicare reimburses telehealth 90853 at the same rate as in-person in 2026.
• Platform requirements: Must use a HIPAA-compliant, real-time audio-video platform. Audio-only group therapy is generally not covered under 90853.

Medicaid telehealth billing

• Telehealth coverage and modifier requirements vary by state
• Some states still require Modifier GT rather than Modifier 95
• Some state Medicaid programs have added audio-only coverage for certain behavioral health services -- check your state manual
• Originating site restrictions may apply depending on the state

Commercial payer telehealth billing

• Most major commercial payers reimburse telehealth group therapy at parity with in-person as of 2026
• Modifier requirements vary -- some use 95, some still accept GT, and some use neither (relying solely on POS codes)
• Always verify each payer's current telehealth policy; these have changed frequently since 2020

Telehealth documentation additions

Beyond standard group therapy documentation, telehealth sessions should include: confirmation that the patient consented to telehealth services, the technology platform used, the patient's physical location (state) at the time of the session (relevant for licensure), and notation that the session was conducted via real-time audio-video communication.

Frequently Asked Questions

What CPT code is used for group therapy?

CPT 90853 is the primary code for group psychotherapy. It is billed per patient per session and is not time-based -- only one unit per patient per day is allowed. The 2026 Medicare national rate is $30.39. For substance use disorder group counseling billed to Medicaid, HCPCS code H0005 may be required depending on your state.

Do I need individualized notes for each group therapy participant?

Yes. Every payer requires individualized documentation for each patient. A shared group summary covering the topic, interventions, and attendance is acceptable, but each patient must also have a unique section documenting their specific participation, verbal contributions, emotional presentation, response to interventions, and progress toward their individual treatment plan goals. Identical notes across participants are the top audit trigger.

What are the most common reasons group therapy claims get denied?

The most frequent denial reasons are: missing or expired authorization, cloned documentation, missing participant names, incorrect CPT code or modifier, no active treatment plan specifying group therapy, medical necessity not documented, billing more than one unit of 90853 per day, and patient eligibility issues. Prevention starts with EHR workflow design and charge capture rules.

How many patients can be in a group therapy session for billing purposes?

Most guidelines recommend 2-12 participants for CPT 90853. Medicare does not specify a hard maximum, but documentation must support therapeutic benefit for each participant. Some commercial payers and state Medicaid programs set explicit caps at 12 participants. Groups exceeding that threshold face higher denial and audit risk.

Can group therapy be billed via telehealth?

Yes. For Medicare, use POS 10 (patient at home) or POS 02 (telehealth originating site) with Modifier 95. Some Medicaid programs and commercial payers still require Modifier GT. In 2026, most payers reimburse telehealth group therapy at the same rate as in-person when correct modifiers and POS codes are applied. Audio-only group sessions are generally not covered under 90853.

When is a co-signature required for group therapy notes?

Co-signatures are required when the facilitating clinician is a trainee, intern, or provisionally licensed provider working under supervision. Notes should be submitted for supervisor review within 3 business days and co-signed within 7-10 business days of the service date. Some states and organizations also require co-signatures during a new-staff probationary period.

What is the difference between CPT 90853 and HCPCS H0005?

CPT 90853 covers group psychotherapy by a licensed mental health professional and is accepted by Medicare, most commercial payers, and many Medicaid programs. HCPCS H0005 specifically covers substance use disorder group counseling and is primarily used for Medicaid billing. Medicare does not typically cover H0005. Some states mandate H0005 for SUD groups while accepting 90853 for mental health groups. Always check your state Medicaid provider manual.

Editorial Standards

Last reviewed: February 26, 2026

Methodology

• Reviewed CMS Medicare billing guidance for CPT 90853 and related group therapy codes.
• Cross-referenced HCPCS H0005 coverage policies across state Medicaid programs.
• Analyzed payer documentation standards from Medicare, Medicaid, and major commercial carriers.
• Reviewed 2025-2026 telehealth billing modifier guidance from CMS and commercial payer policies.
• Consulted AAPC, AMA, and behavioral health billing compliance resources for documentation best practices.

Primary Sources

• CMS Medicare Billing: Psychiatry and Psychology Services
• AAPC CPT Code 90853 Reference
• HCPCS Code H0005 (2026)
• CMS Medicaid Documentation Fact Sheet for Behavioral Health
• CMS Telehealth Modifier 95 Guidance