Modifiers: 58, 78, 79
Question:
Can KZA please explain global modifiers (58, 78, 79)?
Answer:
Excellent question. Modifiers 58, 78, and 79 are used when a patient is in a global period following a prior procedure. Each modifier signals a specific circumstance to the payer, impacting reimbursement and compliance. Here’s how they differ:
Modifier 58 - Staged or Related Procedure
Used when:
Planned or anticipated (staged);
More extensive than the original procedure; or
Therapy is provided following a surgical procedure.
Key Points:
Resets global period.
No payment reduction.
Example: Definitive fracture treatment following debridement of an open fracture the day prior.
Modifier 58 is appended to the ORIF code (XXXXX-58) – This modifier reflects that this procedure is both more extensive and planned.
Takeaway: The procedure is more extensive, planned, or anticipated.
Modifier 78 - Unplanned Return to the Operating/Procedure Room
Used when:
The patient returns to the OR for an unplanned procedure related to the initial surgery.
Key Points:
No change to the global period.
Payment reduction.
Example: Patient returns to the OR for excision and closure of extensive wound dehiscence.
Modifier 78 is appended to code (13160-78) – This modifier reflects an unplanned return to the OR to treat the wound complication associated with the initial surgery.
Takeaway: The procedure performed involves an unexpected return to the OR for a related procedure – typically a complication.
Modifier 79 - Unrelated Procedure or Service
Used when:
Unrelated Procedure or Service.
Key Points:
Resets global period.
No payment reduction.
Example: Left CTR performed a month after Right CTR.
Modifier 79 is appended to code for left (64721-79-LT) – This modifier reflects that this procedure is unrelated to the right-sided procedure.
Takeaway: The procedure is entirely unrelated to prior surgery.
Thank you for reaching out to KZA with your inquiry!
*This response is based on the best information available as of 09/17/26.
