Modifier 77: Repeat procedure by another physician

Modifier Code

Code Type

Billing modifier

When to Use Modifier 77

Use modifier 77 when a repeat procedure is performed by a different provider than the one who originally performed it, on the same date of service. This may arise in group practice or collaborative care settings where a second clinician provides an additional therapy session. Both providers' information must appear on the claim and clinical documentation must justify the repeat visit.

CPT Codes Commonly Paired with Modifier 77

These CPT codes are frequently billed alongside modifier 77 in therapy practice:

CPT 90837 - Psychotherapy, 60 minutes CPT 90834 - Psychotherapy, 45 minutes CPT 90832 - Psychotherapy, 30 minutes CPT 90791 - Psychiatric diagnostic evaluation

Superbill Notes for Modifier 77

What to include: List both providers' NPI numbers and credentials on the superbill. Include documentation from each clinician explaining the clinical necessity of the separate sessions on the same date.

Adding Modifier 77 to a Superbill

Superbilled lets you add modifier codes directly to each line item on your superbill. When generating a superbill with modifier 77, make sure to include your NPI number, the patient's diagnosis code, date of service, fee charged, and amount paid. The modifier appears alongside the CPT code on the claim.

Generate a superbill with Modifier 77 free