Global Period Calculator by CPT Code — 90 Day Post-Op

CPT / HCPCS code (optional — looks up the global period for you) Global days and surgery indicators for 16,000+ codes from the CMS 2026 Medicare Physician Fee Schedule.

Date of surgery The date the procedure was performed.

Global period for the procedure code Filled in automatically when you enter a code above, or choose it yourself.

Global period starts

Global period ends

Code data: CMS 2026 Medicare Physician Fee Schedule Relative Value File (RVU26D, October 2026 release). Commercial payers may assign different global periods. CPT® is a registered trademark of the American Medical Association; code descriptions are not reproduced here.

Global Period Lookup by CPT Code

Every code on the Medicare Physician Fee Schedule carries a global surgery indicator. CMS publishes it in the GLOB DAYS column of the national relative value file (the PPRRVU file), which it reissues each quarter. The lookup at the top of this page reads the 2026 October release, RVU26D, and covers 16,343 CPT and HCPCS codes. Of those, 3,771 carry a 90-day global period, 469 a 10-day period and 1,274 a zero-day period; 996 are add-on codes (ZZZ), 402 are left to the Medicare contractor (YYY), 17 are maternity codes (MMM), and the remaining 9,414 have no global concept at all (XXX).

The global days are only half of what decides payment on a surgical claim, so the lookup also returns the indicators that sit beside them in the same file: the pre-, intra- and post-operative percentages Medicare uses when care is split between physicians with modifiers 56, 54 and 55; the multiple-procedure indicator behind modifier 51 reductions; the bilateral indicator for modifier 50; and the assistant-at-surgery, co-surgeon and team-surgery indicators for modifiers 80–82/AS, 62 and 66. The split matters most in a hand-off. Take 27447: its package divides 10% pre-operative, 69% intra-operative and 21% post-operative, so when a different physician takes over the post-operative care, that physician bills 27447-55 and is paid the 21% post-operative share, while the surgeon bills 27447-54.

Global periods for commonly searched codes (2026 Medicare)

Code	Global period	Pre / intra / post split
10060	010 — 10 days post-op	10% / 80% / 10%
11042	000 — day of procedure only	—
11770	010 — 10 days post-op	10% / 80% / 10%
15839	090 — 1 day pre-op + 90 days post-op	10% / 71% / 19%
17110	010 — 10 days post-op	10% / 80% / 10%
20610	000 — day of procedure only	—
22551	090 — 1 day pre-op + 90 days post-op	10% / 69% / 21%
27130	090 — 1 day pre-op + 90 days post-op	10% / 69% / 21%
27447	090 — 1 day pre-op + 90 days post-op	10% / 69% / 21%
29827	090 — 1 day pre-op + 90 days post-op	10% / 69% / 21%
29881	090 — 1 day pre-op + 90 days post-op	10% / 69% / 21%
33990	000 — day of procedure only	—
43239	000 — day of procedure only	—
43659	YYY — set by the Medicare contractor	—
45378	000 — day of procedure only	—
46050	010 — 10 days post-op	10% / 80% / 10%
47562	090 — 1 day pre-op + 90 days post-op	9% / 81% / 10%
49000	090 — 1 day pre-op + 90 days post-op	9% / 81% / 10%
49505	090 — 1 day pre-op + 90 days post-op	9% / 81% / 10%
62330	090 — 1 day pre-op + 90 days post-op	11% / 76% / 13%
64483	000 — day of procedure only	—
66984	090 — 1 day pre-op + 90 days post-op	10% / 70% / 20%

Select any code for its full indicator set. These are 2026 Medicare values: CMS can change a code’s global period in its annual rulemaking, so check the year of service before you appeal on an older claim, and check commercial payer policy separately, because commercial plans are not bound by the Medicare file.

What the Global Surgical Package Actually Covers

CMS assigns every surgical code a global indicator that defines how much post-operative care is already paid for inside the surgical fee. Bill something inside that window without explaining why it is separate, and it denies as included. Bill it with the wrong explanation, and it either denies or creates an overpayment.

Indicator	Window	Typical of
000	No post-operative period	Endoscopies, many diagnostic procedures
010	10 days after the procedure	Minor surgery
090	1 day before + day of + 90 days after	Major surgery
XXX	Global concept does not apply	Most E/M and diagnostic services
ZZZ	Inherits the primary procedure's period	Add-on codes
YYY	Set by the Medicare contractor when it prices the claim	Unlisted and contractor-priced procedures
MMM	Usual global period does not apply	Maternity and obstetric package codes

The detail most people miss: a 90-day global period starts the day BEFORE surgery. That pre-operative day is inside the package, which is why an evaluation and management visit on the day before or day of major surgery is not separately payable unless it was the visit at which the decision for surgery was made — and that requires modifier 57.

Which Modifier Unlocks Which Scenario

Every one of these tells the payer a different story, and they are not interchangeable. This table is the whole job in one place.

Scenario inside the window	Modifier	Restarts the global?
Unrelated E/M visit	24	No
Significant, separately identifiable E/M with a minor procedure	25	No
The visit where the decision for surgery was made	57	No
Staged or planned related procedure	58	Yes
Unplanned return to the OR for a related complication	78	No — and paid at a reduced rate
Unrelated procedure by the same physician	79	Yes

The 58 versus 78 distinction is where the money is. Both involve going back to theatre. A planned, staged procedure is 58 — full payment, and a new global period begins. An unplanned return for a complication is 78 — reduced intra-operative payment, and the original global period continues unchanged. Coding a complication as staged inflates payment and starts a window that should not exist; coding a staged procedure as a complication gives away money you earned.

The Four Errors That Cause Most Global Period Denials

Billing a post-op visit with no modifier. Routine follow-up is inside the package. If the visit genuinely was unrelated, it needs modifier 24 and a diagnosis that supports the claim — attaching the surgical diagnosis to an "unrelated" visit is the easiest error for a payer to spot.

Missing modifier 57 on the decision visit. For a 90-day procedure, the day before surgery is already inside the window. The decision-for-surgery visit is payable, but only if you say so.

Confusing 58 and 78. Planned staging versus unplanned complication — different payment, different effect on the window.

Forgetting that 58 and 79 restart the clock. A new global period begins from the second procedure, so the window you are tracking moves. Recalculate rather than assuming the original end date still applies.

If a Global Period Claim Already Denied

A missing or wrong modifier on a service that was genuinely separate is usually a corrected claim rather than an appeal — the documentation already supports it, the claim simply failed to say so. Check you are inside the correction window with our timely filing and appeal deadline calculator, and if you are unsure which modifier the scenario calls for, the modifier decision tree walks through it. Where the denial is a bundling decision you disagree with, CO-97 and CO-236 cover the appeal route.

Global indicators are published in the Medicare Physician Fee Schedule and are updated annually — verify the current year's indicator for your code rather than relying on memory, and note that commercial payers may apply their own global policies that differ from Medicare's.

Working Out the 90 Day Post-Op Period

The 090 global period is the one people most often need to calculate, and it is the one most often counted wrongly. A major surgery package runs across 92 calendar days, not 90: one day before the operation, the day of the operation itself, and the 90 days that follow. If you count 90 days forward from the surgery date alone you will land one day short of the true end date and may write off a visit that was still inside the package — or bill one that was not.

Two further rules decide the end date in practice. The count is in calendar days, so weekends and public holidays are included; there is no business-day adjustment. And the clock is tied to the date of the procedure, not the date of discharge, so a patient who stays in hospital for a week after a 090 procedure is already seven days into the post-operative period on the day they leave. Enter the surgery date above and the calculator applies all three rules for you, returning the end date, the days still remaining, and the modifier that applies to each scenario inside the window.

Frequently Asked Questions

How do I find the global period for a CPT code?

Enter the code in the lookup at the top of this page. It returns the CMS global indicator (000, 010, 090, XXX, YYY, ZZZ or MMM) from the 2026 Medicare Physician Fee Schedule Relative Value File, fills in the calculator for you, and shows the pre-, intra- and post-operative split along with the multiple-procedure, bilateral, assistant, co-surgeon and team-surgery indicators. CMS publishes the same value in the GLOB DAYS column of its PPRRVU file.

Do commercial payers use the same global periods as Medicare?

Many commercial payers adopt the Medicare global days, but they are not required to, and some set their own for particular procedures. The lookup on this page reflects Medicare. For a commercial claim, check the payer's reimbursement policy or provider manual before relying on the Medicare value.

What are the 0, 10 and 90 day global periods?

CMS assigns every surgical code a global indicator. 000 means no post-operative period, typical of endoscopies and many diagnostic procedures. 010 means a 10-day post-operative period, typical of minor surgery. 090 means a major surgery package covering the day before surgery, the day of surgery, and the 90 days after. Codes marked XXX have no global concept, ZZZ are add-on codes that inherit the primary procedure's period.

Does the 90-day global period include the day before surgery?

Yes. The 090 package covers one day pre-operatively, the day of surgery, and 90 days after. That pre-operative day is why a separate evaluation and management service on the day before or day of major surgery needs modifier 57 - the decision for surgery - to be paid separately.

Which modifier do I use for an unrelated visit during the global period?

Modifier 24 on the evaluation and management service. It tells the payer the visit was unrelated to the original procedure. The diagnosis on the claim has to support that - an unrelated modifier with the surgical diagnosis attached is a common and easily spotted error.

Does a return to the operating room restart the global period?

It depends on why. Modifier 78 - an unplanned return to the operating room for a related complication - does NOT start a new global period, and is paid at a reduced intra-operative rate. Modifier 58 for a staged or planned procedure DOES start a new global period, as does modifier 79 for an unrelated procedure by the same physician. Getting 78 and 58 the wrong way round changes both the payment and the subsequent window.

What is included in the global surgical package?

Broadly: the pre-operative visit within the defined window, the procedure itself, routine post-operative care and follow-up visits related to recovery, dressing changes, and management of the typical post-operative course. Not included: unrelated care, treatment for the underlying condition beyond normal recovery, staged procedures, and complications requiring a return to the operating room.

How do I calculate the 90 day post-op period after surgery?

Take the date of surgery, add 90 days, and include the day of surgery and the day before it. The full 090 package therefore spans 92 calendar days. Count calendar days, not business days, and count from the date of the procedure rather than the discharge date. The calculator on this page applies all three rules and returns the exact end date.

Is there a free 90 day post op calculator?

Yes - this page is one. Enter the date of surgery, choose the 090 global indicator for major surgery, and the tool returns the post-operative window start and end dates, how many days remain, and which modifier (24, 25, 57, 58, 78 or 79) makes a service inside that window separately payable.

When exactly does the post-operative period end?

For a 090 procedure it ends 90 days after the date of surgery. For a 010 procedure it ends 10 days after. For a 000 procedure there is no post-operative period at all, though same-day rules still apply. A service on the final day of the window is still inside the global period, not outside it.

Global Period Calculator — What Can You Bill After Surgery?