CPT 99355
CPT Code 99355: Prolonged office service, each additional 30 min
Duration
30 min
Typical Fee
$50-$100
Type
Outpatient therapy
When to Use CPT 99355
Use CPT code 99355 when billing for prolonged office service, each additional 30 min. This code is used by licensed therapists (LCSW, LPC, MFT, Psychologist) for outpatient sessions.
Adding CPT 99355 to a Superbill
When generating a superbill with CPT 99355, 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.