What is the global surgery period in orthopedic billing?

The global surgery period is a set number of days around a procedure during which related services are bundled into the surgical payment. Major orthopedic procedures carry a 90-day global period; minor procedures typically carry a 10-day global period. CMS doesn’t pay separately for services considered part of the global package unless a valid modifier is appended.

When should modifier 59 be used in orthopedic billing?

Modifier 59 indicates a distinct procedural service — a procedure that was separate from another service billed on the same day. In orthopedic billing, it’s commonly applied with bilateral procedures, separate anatomical sites, or unrelated services in the same session. Documentation must clearly support the separate nature of the service. Where possible, use a more specific X modifier (XS, XP, XU, XE) instead.

What is the difference between modifier 58 and modifier 79?

Modifier 58 is for staged or related procedures performed during the global period — planned or more extensive than the original. Modifier 79 is for genuinely unrelated procedures during the global period. Confusing the two is a common audit trigger because modifier 79 requires a completely separate diagnosis and clinical reason with no connection to the original procedure.

Which orthopedic CPT codes attract the most OIG scrutiny?

Codes that consistently appear on OIG Work Plans and RAC targets include 27447 (total knee arthroplasty), 29881 (knee arthroscopy with meniscectomy), 23472 (total shoulder arthroplasty), and spinal fusion bundles like 22612–22614. These codes are flagged for upcoding, incorrect modifier use, and unbundling violations.

Can a physician bill an E/M visit during a global period?

Yes — but only if the E/M visit is unrelated to the surgical procedure. Modifier 24 must be appended to the E/M code in that case. If the visit is for a post-op complication or routine surgical follow-up, it’s part of the global package and can’t be billed separately.

What documentation supports modifier use in orthopedic billing?

Documentation must explicitly state the clinical reason for each modifier. For modifier 59, the operative report must describe separate incision sites or separate procedures. For modifier 58, the original operative notes should reference the plan for a staged procedure. For modifier 24, the E/M note must show a diagnosis that has no connection to the surgical procedure.

How does Qualigenix handle orthopedic billing compliance?

Qualigenix assigns orthopedic-specialized billing teams to each practice. Every claim goes through a modifier validation check and CCI edit review before submission. We maintain a 99% claim accuracy rate and 95% first-pass acceptance rate across orthopedic clients, and conduct quarterly audits to catch any patterns before payers flag them.

Orthopedic Billing: Global Periods 2026

Orthopedic Billing: Global Periods 2026 | Qualigenix