CPT Code 90853: Group Psychotherapy Billing Guide
CPT code 90853 is used to bill for group psychotherapy sessions, making it essential for providers treating multiple patients together in a therapeutic setting. It's commonly used in outpatient mental health, substance use treatment, and intensive outpatient programs (IOPs).
In this guide, you’ll learn:
What CPT 90853 covers
When to use it
Documentation best practices
Typical reimbursement rates
Common billing mistakes to avoid
What is CPT Code 90853?
CPT 90853 refers to group psychotherapy, where a clinician facilitates a therapeutic session for multiple patients at the same time. These sessions involve structured, evidence-based treatment rather than casual support groups or educational seminars.
A typical 90853 session includes:
60-minute clinician-led therapy
Psychotherapeutic techniques (e.g., CBT, DBT, trauma-informed therapy)
Group discussion centered on shared mental health goals
Note: This code does not cover family therapy, psychoeducation, or social skills groups unless they include structured psychotherapy.
When to Use CPT Code 90853
Use 90853 when:
The session includes 2 or more patients, typically 6–12
A licensed clinician leads structured psychotherapy, not just education
Each participant has a mental health diagnosis
The session focuses on treatment, not case management or support
Examples of appropriate use:
DBT skills group for clients with borderline personality disorder
Group CBT for depression or anxiety
Relapse prevention groups in SUD programs
Documentation Requirements
Each patient in the group must have separate documentation that includes:
Time and date of session
Group topic and therapeutic approach
Patient’s participation level and response
Connection to individual treatment plan
Group size and duration (usually 45–60 minutes)
Tip: Avoid copy-pasting identical notes across patients—insurers often flag this in audits.
Reimbursement Rates for 90853
Medicare reimbursement for CPT 90853 typically ranges from $25 to $40 per patient per session. Commercial insurance may offer higher rates, especially in intensive outpatient settings or behavioral health programs.
Reimbursement is per participant, not per group.
Common Billing Errors to Avoid
Missing documentation for individual patients
No documented mental health diagnosis
Using 90853 for educational or peer support groups
Improper group size (very large or very small groups may be scrutinized)
Telehealth billing without correct modifiers (use modifier 95 if allowed by payer)
Final Thoughts
CPT 90853 is a valuable code for delivering effective, scalable mental health care in group settings. By documenting each participant’s engagement and linking it to their treatment goals, you can bill confidently—and get reimbursed accurately.
