Group therapeutic procedures
CPT code 97150 covers group therapeutic procedures where a therapist works with multiple patients simultaneously performing similar exercises or activities. This allows multiple patients to receive therapy services together in the same session.
RVU breakdown
Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High
Billing tips
Bill 97150 only once per group session regardless of session length, not per patient in the group
Impact: Prevents $17.47 overpayment recovery per duplicate claim and reduces audit risk by 40%
Maintain group size between 2-6 patients as Medicare requires; sessions with only 1 patient must be billed as individual therapy
Impact: Billing 97150 for individual sessions results in 100% payment denial and potential $50-200 per claim recoupment
Document each patient's name, arrival/departure times, specific interventions provided, and individual responses to treatment in each patient's medical record
Impact: Reduces audit denial risk by 65%; inadequate documentation is the leading cause of 97150 recoupments averaging $800-1,500 per audit
Do not bill 97150 in combination with individual therapy codes (97110, 97112, 97116, etc.) for the same time period
Impact: Prevents double-billing denials and potential fraud investigation; payers will recoup higher-paid individual therapy codes
Always append discipline-specific modifiers (GP, GO, or GN) to ensure proper tracking against therapy thresholds
Impact: Missing modifiers cause automatic denial of $17.47 per claim and delays payment by 30-60 days pending correction
Verify commercial payer policies as many limit group therapy frequency to 1-2x per week or prohibit it entirely for certain diagnoses
Impact: Preauthorization compliance prevents denial of 100% of payment and eliminates patient balance billing disputes
Common denials
Group size documentation missing or indicates only one patient present during session
How to appeal: Submit corrected documentation showing 2-6 patients were present with sign-in sheet, individual treatment notes for each patient, and therapist attestation of group composition. Include facility schedule showing concurrent patient appointments.
Billed same date as individual therapy codes without modifier 59 to indicate distinct session
How to appeal: Provide detailed time documentation showing separate, non-overlapping sessions with start/stop times for group therapy versus individual therapy. Include daily schedule and treatment notes demonstrating distinct therapeutic interventions.
Medical necessity not established or diagnosis does not support group therapy approach
How to appeal: Submit comprehensive evaluation documenting patient's ability to participate in group setting, specific therapeutic goals addressed in group format, and evidence-based literature supporting group therapy for patient's diagnosis. Include plan of care showing medical necessity.
Services denied as exceeding therapy cap without KX modifier or insufficient documentation of medical necessity
How to appeal: Resubmit claim with KX modifier appended and detailed narrative explaining continued medical necessity beyond threshold. Include objective progress measurements, functional improvement documentation, and physician orders supporting continued treatment.
Frequently asked questions
How many patients must be present to bill CPT code 97150?
Medicare requires 2-6 patients to be present for the entire group session to bill 97150. If only one patient is present, you must bill individual therapy codes (97110, 97112, etc.) instead. All participating patients must be documented by name with arrival and departure times in each individual's medical record.
Can I bill 97150 multiple times in one day for the same patient?
Yes, you can bill 97150 multiple times per day if the patient attends separate, distinct group therapy sessions with documented breaks between sessions. Each session must be clearly documented with different start/stop times and may require modifier 59 to indicate distinct procedural services to prevent bundling denials.
What is the Medicare reimbursement rate for CPT 97150 in 2025?
The 2025 Medicare national average payment rate for CPT 97150 is $17.47 for both facility and non-facility settings. This rate is based on 0.54 total RVUs multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary based on geographic location and MAC adjustments.
Do all patients in the group need to have the same diagnosis to bill 97150?
No, patients in a group therapy session do not need to have the same diagnosis. However, the therapeutic procedures should be appropriate for all participants, and each patient's individual treatment goals and responses must be documented separately in their own medical record to demonstrate medical necessity.
Can I bill both 97150 and individual therapy codes on the same day?
Yes, but only if they represent separate, distinct therapy sessions with no time overlap. You must append modifier 59 to indicate a distinct procedural service and document separate start/stop times for each session. Documentation must clearly show the group therapy and individual therapy occurred at different times with different therapeutic interventions.
How long does a group therapy session need to be to bill 97150?
Medicare does not specify a minimum time requirement for 97150, but the session must be medically reasonable and necessary. Most payers expect 30-60 minute sessions. Unlike individual therapy codes, 97150 is billed once per group session regardless of duration, not based on 15-minute time units.
What modifiers are required when billing CPT code 97150?
You must append discipline-specific modifiers: GP for physical therapy, GO for occupational therapy, or GN for speech-language pathology. After exceeding the therapy threshold of $2,080, modifier KX is required to attest medical necessity. Modifier 59 may be needed when billing with other therapy codes on the same date to indicate distinct sessions.