Modifier 57: The Visit Where the Decision for Major Surgery Was Made
Modifier 57 marks an E/M visit as the one where the decision for major surgery (90-day global) was made, exempting it from the global package when the surgery happens that day or the next. Without it, the visit bundles into the surgical fee and denies.
- Applies to
- E/M codes the day of or day before a major surgery (90-day global)
- Payment impact
- Pays the E/M in full instead of bundling it into the surgical package
- Audit risk
- Moderate — payers check that the decision truly happened at that visit
- Common denial
- CO-97 (included in global surgical package) when the modifier is missing
What does modifier 57 do?
It flags the E/M visit at which the provider decided the patient needs major surgery, so that visit escapes the surgical global period. Medicare's global package for 90-day procedures starts the day before surgery — so an evaluation the evening before an emergency operation is technically inside the package and will deny CO-97 unless modifier 57 tells the payer this was decision-making, not routine pre-op clearance.
When do you use it?
When the E/M happens the day of or the day before a 90-day-global procedure and the surgical decision was made at that encounter. Realistic example: a general surgeon is called to the ED for abdominal pain, examines the patient, diagnoses acute appendicitis, and takes them to the OR that night. Bill 99223-57 + 44950 (appendectomy). Both pay. Skip the 57 and the admission H&P — several hundred dollars — writes off into the surgical fee.
- Confirm the procedure has a 90-day global (check the MPFS indicator, or the Medicare fee calculator).
- Confirm the E/M date is the day of or day before surgery.
- Confirm the note documents the decision — not just clearance for an already-planned case.
When is it wrong or a denial trigger?
- Minor procedures. A 57 on the visit before a 10-day-global skin excision is wrong; that scenario is modifier 25 or nothing.
- Pre-op clearance for scheduled surgery. If the decision was made two weeks ago and today is just the pre-op H&P, that visit is part of the package. Appending 57 to it is a classic audit finding.
- Different provider billing it. A hospitalist doing medical clearance bills their own E/M without 57; the modifier belongs to the operating provider's decision visit.
What are the documentation and payment impacts?
Payment is the full E/M allowable on top of the surgical fee — for emergency surgeons this is one of the most commonly forfeited dollars in the specialty. Documentation should state the findings, the diagnosis, the discussion of risks and alternatives, and an explicit line such as "decision made to proceed to surgery today." On appeal, that sentence is what wins.
Frequently asked questions
Any procedure with a 90-day global period on the Medicare Physician Fee Schedule. For minor procedures with 0- or 10-day globals, the decision-making is considered inherent, so you use modifier 25 for a significant separate E/M instead of 57.
You do not need it then. The global package only sweeps in E/M services on the day of and the day before major surgery. A decision visit seven days out is billable with no modifier at all — adding 57 there is harmless for some payers but unnecessary.
Rarely, but yes in theory if the visit meets both definitions with different procedures involved. In practice pick the one that matches the global period of the surgery performed: 57 for 90-day procedures, 25 for 0- or 10-day procedures.
The provider who made the decision and will perform (or whose group will perform) the surgery. An ER physician who consults a surgeon but does not operate bills a normal E/M; the surgeon's own decision-making visit carries the 57.
Sources & further reading
Reviewed by the ImmediCare Solutions RCM team
Certified billers and coders handling claims across 50+ specialties nationwide. This entry is reviewed against current payer policy and CMS rules. Last review: Jul 5, 2026.
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