Global periods: what is already paid for

How to find a code's global period

CMS assigns every CPT and HCPCS code a global period value — the stretch of pre- and postoperative days one payment already covers — and publishes it as one of the payment indicators in the Physician Fee Schedule Search tool, right alongside the code's RVUs and dollar amount 1Ref 1Centers for Medicare & Medicaid Services (2026).Physician Fee Schedule Search.That CMS publishes the global period as a payment indicator, alongside RVUs and payment amounts, in the public Physician Fee Schedule Search tool.. Look the code up before assuming a follow-up visit is billable on its own.

The lookup returns one of a small set of values:

• 000 — the day of the procedure only (many injections and minor scope procedures)
• 010 — a 10-day global period (most minor procedures)
• 090 — a 90-day global period (major surgery)
• XXX — the global-period concept doesn't apply to this code
• YYY — your Medicare Administrative Contractor sets the global period
• ZZZ — an add-on code that follows its primary procedure's global period

A global period of 010 or 090 means the single payment already includes the pre-procedure work-up, the procedure itself, and routine follow-up through that window — not just the moment of service.

What the bundle covers, and what it doesn't

A global period bundles the procedure with the routine visits a patient normally needs to recover from it — dressing changes, suture removal, and check-ins tied directly to that procedure, inside the code's window. It does not bundle a new problem, a complication serious enough to require another trip to the operating room, or a second, staged procedure that was planned from the start.

Commonly billed separately, when it's true:

• A problem that has nothing to do with the procedure, addressed at a follow-up visit
• A complication requiring an unplanned return to the operating or procedure room
• A staged or related procedure planned at the time of the original surgery
• An unrelated procedure performed by the same clinician during the postoperative window

The test is honesty, not convenience: if the visit exists because of the original procedure, it's inside the bundle whether or not it feels like "extra work."

The same logic runs in reverse for pre-procedure work: a related evaluation that's part of deciding to do the procedure, or the standard pre-op work-up immediately before it, is usually inside the bundle too. What earns separate billing before the procedure is a visit that would have happened anyway — a scheduled chronic-disease check, an unrelated new complaint — not a visit created solely to clear the patient for the upcoming procedure.

A worked example

A patient has a minor procedure with a 010-day global period on a Monday. Five days later, they come back reporting an unrelated sinus infection with no connection to the procedure site or the reason it was performed. That visit is billed as a normal office E/M, leveled by medical decision making or time 3Ref 3American Medical Association (2023).CPT evaluation and management (E/M) revisions.That an unrelated E/M visit reported during a global period is coded like any other office visit, under the AMA's 2021 MDM-or-time E/M framework.4Ref 4Centers for Medicare & Medicaid Services (2023).Evaluation and Management Services Guide.That E/M office-visit levels, including an unrelated visit billed during a global period, are selected by medical decision making or total time under the current framework., with modifier 24 attached to flag it as unrelated during the postoperative window — and the note documents the unrelated complaint clearly enough that a reviewer doesn't have to guess.

Contrast that with a patient who returns on day 5 because the surgical site looks irritated. If the exam finds normal healing and reassurance is all that's needed, that visit is inside the 010-day bundle — no separate charge, no modifier, because it's exactly the kind of routine follow-up the original payment already covers. The difference between the two scenarios isn't the timing; it's whether the visit exists because of the procedure or in spite of it.

Billing something genuinely separate

When the visit is truly unrelated to the procedure, flag it with the modifier CPT reserves for that situation 2Ref 2American Medical Association (2026).CPT® (Current Procedural Terminology).That CPT, maintained by the AMA, is the source of the procedure code set and its modifiers, including the modifiers that flag work as falling outside a global-period bundle. and code the visit itself the way you would any other office visit — by medical decision making or by total time, under the E/M framework the AMA finalized in 2021 3Ref 3American Medical Association (2023).CPT evaluation and management (E/M) revisions.That an unrelated E/M visit reported during a global period is coded like any other office visit, under the AMA's 2021 MDM-or-time E/M framework. and that CMS's own guidance still walks through for level-setting 4Ref 4Centers for Medicare & Medicaid Services (2023).Evaluation and Management Services Guide.That E/M office-visit levels, including an unrelated visit billed during a global period, are selected by medical decision making or total time under the current framework..

The modifiers that most often apply to a global-period claim:

Documentation has to support the modifier before you bill it — a chart note that only restates the original diagnosis won't survive a payer's review of an unrelated-visit claim.

Reading a bundling denial on the remittance

If a visit does get billed inside another code's global period without the right flag, the payer will deny or zero out that line — and the reason shows up as a Claim Adjustment Reason Code on the remittance, the standard list X12 maintains for explaining why a line paid differently than billed 5Ref 5X12 (2026).Claim Adjustment Reason Codes.That a global-period bundling denial appears on the remittance as a Claim Adjustment Reason Code, and that CARCs are the standard list for mapping why a line paid differently than billed.. Match the CARC to what actually happened before you resubmit.

A denial coded as bundled into the global period usually means one of three things: the modifier is missing, the modifier is present but the documentation doesn't support it, or the visit really was routine follow-up and the payer is right. Resubmitting the identical claim without changing one of those three fixes nothing.

Build the check into intake, not into hindsight

The cheapest way to avoid a global-period denial is to never bill the visit blind in the first place. When a procedure is scheduled, note its global-period end date on the chart or in the scheduling system so whoever checks the patient in for a later visit can see, at a glance, whether that visit needs a modifier.

A common convention among solo practices: flag the chart for the full window, not just the obvious follow-up appointments — patients often come back for something unrelated during a 90-day global period and the modifier question surfaces before the visit is even coded, not after.

Commercial payers usually follow the same table

Most commercial payers price their own global periods off the same CMS assignments rather than building a separate table from scratch — though your specific contract, not this general pattern, controls what that payer actually pays and edits. When a commercial denial looks like a global-period bundle, checking the CPT code's Medicare global value first is usually the fastest way to confirm whether the denial is legitimate before you call the payer.