10-day global (minor surgery)

When CMS assigns a procedure a global surgery indicator of 010, it classifies that procedure as minor surgery with a 10-day post-operative window. The global package begins on the day of the procedure itself (no pre-op day is included, unlike the 90-day major surgery package) and runs through the 10th calendar day after surgery—11 days in total. The allowed payment for that CPT code is actuarially constructed to include the surgical work plus the anticipated volume and intensity of related follow-up visits during that window. No additional payment is made for office visits, suture removal, wound checks, or other routine post-operative management that is clinically related to the procedure during those 11 days.

The 010 indicator is common in orthopedic and musculoskeletal coding for procedures such as closed fracture care without manipulation, small joint injections, minor soft-tissue procedures, and diagnostic biopsies. It sits between the 000-day indicator (procedure-day only, no post-op period at all) and the 090-day major surgery package. Medicare's NCCI policy manual lists the indicator alongside every CPT code on the Physician Fee Schedule, and MACs enforce it through automated edits.

Importantly, the 10-day rule blocks separate payment for related E&M services—but not for everything. Services that are clearly unrelated to the surgical procedure, a return to the operating room, a second distinct procedure required because the first failed, or critical care unrelated to the surgery can still be billed separately when correctly documented and appended with the appropriate modifier. If a diagnostic biopsy carrying a 10-day global period is performed on the same day as, or in the 10 days preceding, a major surgery, Medicare will separately pay for the major procedure.

Billing a related office visit during the 10-day window—even a legitimate wound check—without a valid modifier triggers an automatic denial or payment recoupment, because the MAC's claim-processing system treats the visit as already bundled into the surgical payment. Conversely, failing to append modifier 24 (unrelated E&M) or modifier 79 (unrelated procedure) when those encounters genuinely fall outside the scope of the original surgery leaves money on the table and, if done habitually, can skew utilization data that OIG uses when selecting practices for audit. Getting the global period right is therefore both a compliance requirement and a revenue-protection measure.