97150 CPT Code – Group Therapy Billing Explained for Providers

CPT 97150 – therapeutic group procedure for 2+ patients in the same session.
It is an untimed code (billed once per session, not per 15 minutes).
Used by physical, occupational, and speech therapists for group care.
Requires skilled therapist involvement and clear documentation.
Modifiers (GP, GO, GN, CQ, CO) must be applied per therapy type.
Reimburses less than 97110 (individual therapy) but still requires medical necessity.
Avoid denials by documenting objective progress and individualized care plans.
Partnering with billing experts ensures clean claims and faster payments.

Billing for group therapy sessions can often confuse providers. Unlike individual therapy codes such as 97110 CPT, group therapy codes follow different rules, documentation requirements, and reimbursement guidelines.

The 97150 CPT code is essential for physical therapists, occupational therapists, and speech-language pathologists who treat multiple patients at the same time. Correct use of this code ensures providers get reimbursed properly while staying compliant with payer policies.

What is CPT Code 97150?

CPT 97150 describes “therapeutic procedures, group (2 or more individuals)” performed by a licensed provider.

It applies when a therapist delivers structured therapy services to multiple patients simultaneously, rather than in a one-on-one session.

How does 97150 CPT Code Work?

CPT 97150 falls under the Physical Medicine and Rehabilitation – Therapeutic Procedures category. It is an untimed code, which means it is reported once per session, not per 15-minute increments.

Key Rules for Using 97150:

Must involve 2 or more patients in the same therapy session.
Services must require the skills of a licensed therapist (PT, OT, SLP, chiropractor).
The therapist should provide supervision and skilled intervention, even if not working one-on-one with each patient.
Patients do not need to perform the same activities, but all must be engaged in therapeutic procedures.
Documentation must justify medical necessity for each patient individually.

Common Mistakes:

Reporting 97150 as a timed code (it is untimed).
Failing to document therapist involvement or patient progress.
Using 97150 when patients are simply exercising independently without skilled supervision.
Not applying appropriate therapy modifiers (GP, GO, GN, CO, CQ) as required by payers like Medicare.

Which Modifiers Apply to CPT 97150?

Correct use of modifiers ensures claims are processed under the right plan of care.

Modifier	Use Case
GP	Outpatient Physical Therapy Services
GO	Outpatient Occupational Therapy Services
GN	Outpatient Speech-Language Pathology Services
CQ	Services by a Physical Therapist Assistant
CO	Services by an Occupational Therapy Assistant

CPT 97150 vs. Other Therapy Codes

Here’s how 97150 compares with similar therapy codes:

Code	Description	Timed/Untimed	Use Case
97150	Group therapy, 2+ patients	Untimed	Supervised group rehab, PT/OT/SLP
97110	Therapeutic exercises, one-on-one	Timed (15 min)	Individual PT exercises
97139	Unlisted therapeutic procedure	Varies	Used when no specific CPT applies
97039	Unlisted physical medicine procedure	Varies	Rare, used as fallback

Tip: Use 97150 when two or more patients receive therapy at the same time under supervision. Use 97110 for individual sessions.

Reimbursement Guidelines for 97150

Payers such as Medicare and commercial insurers typically reimburse CPT 97150 when:

Documentation shows direct therapist involvement in the group session.
Medical necessity is supported with objective measures (range of motion, strength tests, functional improvement).
Each patient’s plan of care is individualized and regularly updated.
Services cannot be performed safely by the patient alone or by a caregiver.

97150 reimbursement rates vary by payer and geographic region. On average, Medicare reimburses lower than 97110 because group therapy is less resource-intensive than one-on-one care.

Final Thoughts

Accurate use of CPT 97150 ensures providers are reimbursed for group therapy services without risking denials. Because payers closely review therapy documentation, clear notes about medical necessity, patient progress, and therapist involvement are critical.

Express Medical Billing helps physical, occupational, and speech therapy providers navigate complex CPT coding and modifier rules like 97150. Our team ensures claims are submitted correctly the first time, improving revenue cycle efficiency and reducing denials.

Contact us today to streamline your therapy billing and maximize reimbursements.

Frequently Asked Questions (FAQs)

What is CPT code 97150 used for?

CPT 97150 is used to bill group therapy sessions (two or more patients) when a licensed therapist supervises and provides skilled interventions.

Is 97150 a timed code?

No. 97150 is untimed and is billed once per session, regardless of duration.

Can 97150 be used for speech therapy?

Yes. 97150 applies to physical, occupational, and speech therapy when group therapy is delivered under skilled supervision.

What is the reimbursement rate for 97150?

Reimbursement rates depend on payer and region, but it generally pays less than 97110 (individual therapy). Always check the Medicare Physician Fee Schedule (MPFS) or your payer contract.

What modifier should I use with CPT 97150?