CPT Code 99443: Telephone evaluation and management, 21-30 min

When to Use CPT 99443

Use CPT code 99443 when billing for telephone evaluation and management, 21-30 min. This code is used by licensed therapists (LCSW, LPC, MFT, Psychologist) for outpatient sessions.

Adding CPT 99443 to a Superbill

When generating a superbill with CPT 99443, 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 99443:

Documentation Requirements

Document the comprehensive phone discussion, clinical assessment, treatment plan changes, and exact call duration between 21-30 minutes.

Common Denial Reasons

• ✗ Call duration outside the 21-30 minute range
• ✗ Service should have been billed as an in-person or telehealth visit instead
• ✗ Phone E/M not a covered benefit

Reimbursement Expectations

OON reimbursement typically 40-60% of UCR. Expect $30-$84 for extended phone E/M.