CPT Code 96159: Health behavior intervention, group, each additional 30 min

When to Use CPT 96159

Use CPT code 96159 when billing for health behavior intervention, group, each additional 30 min. This code is used by licensed therapists (LCSW, LPC, MFT, Psychologist) for outpatient sessions.

Adding CPT 96159 to a Superbill

When generating a superbill with CPT 96159, include the ICD-10 diagnosis code, date of service, fee charged, amount paid, and your NPI number. Superbilled pre-fills common therapy CPT codes automatically.

Common ICD-10 Pairings

These diagnosis codes are frequently used alongside CPT 96159:

Documentation Requirements

Document the extended group intervention time, specific topics covered, and each patient participation in the additional period.

Common Denial Reasons

• ✗ Billed without the primary group intervention code
• ✗ Not linked to a medical condition for each participant
• ✗ Missing per-patient documentation for the additional time

Modifier Notes

Add-on code — must be billed with the primary group intervention code.

Reimbursement Expectations

OON reimbursement typically 35-50% of UCR. Expect $9-$25 per patient per additional 30 minutes.