Orthopedic Billing: Global Periods, Modifiers, and Getting Paid for What You Do

Orthopedic billing is full of services that look separately billable in the schedule but may be included in a global surgical package — or separately payable only when the clinical circumstances and documentation support the right modifier. That makes global-period awareness essential for surgeons, coders, billers and front-office staff.

Know the global period before billing the visit

CMS classifies surgical procedures using global surgery indicators. Its current Global Surgery guidance describes 0-day, 10-day and 90-day postoperative periods, along with other indicators. For many procedures, Medicare payment includes routine preoperative or postoperative services associated with the surgery. Review the current CMS Global Surgery resources and MLN Global Surgery booklet.

A 90-day global generally includes the day before surgery, the day of surgery and the following 90 days under Medicare’s methodology. A 10-day global generally includes the surgery day and the next 10 days. A 0-day procedure generally has no postoperative days beyond the procedure day.

Modifier 57: decision for major surgery

When an E/M service results in the initial decision to perform a major surgery, modifier 57 may be appropriate under Medicare rules. It should not be used simply because an office visit occurred before a procedure, and CMS cautions against its use with minor procedures that have 0- or 10-day global periods.

Modifier 25: significant, separately identifiable E/M

Orthopedic offices often perform an E/M service and a minor procedure on the same day. Modifier 25 may be appropriate when the E/M service is significant, separately identifiable and medically necessary beyond the usual pre- or post-service work of the procedure. The note — not the modifier — must establish that distinction.

Modifier 24: unrelated E/M during postoperative period

If the same physician or qualified professional evaluates an unrelated problem during the postoperative period, modifier 24 may be appropriate on the E/M service under applicable rules. The diagnosis and documentation should make the lack of relationship to the surgery clear.

Modifiers 58, 78 and 79: postoperative procedures are not all the same

• 58: commonly used for a staged or related procedure/service during the postoperative period when the circumstances meet the code’s requirements.
• 78: commonly used for an unplanned return to the operating/procedure room for a related procedure during the postoperative period.
• 79: commonly used for an unrelated procedure or service by the same physician/QHP during the postoperative period.

The correct modifier depends on the clinical relationship to the original surgery and the circumstances of the subsequent procedure. Do not select based on which modifier pays more.

Transfers of postoperative care

When there is a formal transfer of care, Medicare global-surgery rules include modifiers such as 54 for surgical care only and 55 for postoperative management only, with documentation and claim requirements. This is especially relevant when surgeons and other practitioners share care across locations or organizations.

NCCI edits still matter

Global-period logic does not replace NCCI. CMS’s current NCCI FAQ library lists global-surgery modifiers among modifiers that may be used under appropriate clinical circumstances to address procedure-to-procedure edits. That wording matters: a modifier should never be appended solely to bypass an edit.

Common orthopedic billing mistakes

1. Billing routine postoperative visits separately during the global period.
2. Using modifier 57 with a minor procedure when the circumstances do not support it.
3. Using modifier 25 automatically whenever an E/M and procedure share a date.
4. Failing to distinguish an unrelated postoperative condition from a surgery-related complication or follow-up.
5. Missing laterality, assistant-at-surgery or co-surgery requirements when applicable.
6. Failing to document a formal transfer of postoperative care.
7. Not checking the current global indicator for the specific procedure and payer.

A simple orthopedic claim-release checklist

Before releasing a surgical or postoperative claim, confirm the procedure’s global indicator, surgery date, relationship of the current service to the surgery, correct diagnosis linkage, modifier support, place of service and whether another provider or facility has overlapping billing responsibility.

How Quantix Health can help

Quantix Health provides coding/corrective coding, claim submission, denial management and A/R reporting for orthopedic practices. An orthopedic billing review can focus on global-period denials, modifier patterns, aging postoperative claims and payer-specific edits. Contact Quantix Health to discuss your practice.

This article is general educational information for practice operators, not legal, coding, reimbursement, or compliance advice. Payer rules, CPT/HCPCS codes, and Medicare/Medi-Cal policies change — verify current official guidance before acting.