CPT Code 90869: Transcranial magnetic stimulation, subsequent motor threshold

When to Use CPT 90869

Use CPT code 90869 when billing for transcranial magnetic stimulation, subsequent motor threshold. This code is used by licensed therapists (LCSW, LPC, MFT, Psychologist) for outpatient sessions.

Adding CPT 90869 to a Superbill

When generating a superbill with CPT 90869, 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 90869:

Documentation Requirements

Document the clinical rationale for re-determining the motor threshold. Include updated stimulation parameters and any changes from the initial course.

Common Denial Reasons

• ✗ Motor threshold re-evaluation not clinically justified
• ✗ Billed too frequently — threshold typically set once per treatment course
• ✗ Missing documentation of why threshold needed adjustment

Reimbursement Expectations

OON reimbursement typically 40-60% of UCR. Expect $60-$210 per session.