How does the global period affect dermatologists?
Global period is a term used to describe what is included in the payment for performance of a procedure using Current Procedural Terminology (CPT) codes. These global periods can either be 0 (000), 10 (010), or 90 (090) days. In dermatology, we have all three. Most codes used by dermatologists fall under global periods of 0 and 10 days, while 90-day codes are used for all adjacent tissue transfers and split- and full-thickness grafts. In documents listing global periods for CPT codes,1 you also may see “XXX” when the global period concept does not apply to a particular code, “YYY” when the payer decides on whether a global period applies and what it will be, and “ZZZ” when a certain code is an add-on to another service and is therefore included in the global period for that service.
The contents of a service are defined by the global period. Although the procedure itself is an obvious component, CPT codes with a global period of 000 (eg, biopsy of a skin lesion, simple repairs) have no preoperative or postoperative periods, and an evaluation and management (E&M) service usually is not payable if it was done in relation to the procedure. If the patient returns the following day for any reason, including concerns about the procedure itself, these visits may be reported separately.
For CPT codes with global periods of 010 (eg, excisions, intermediate and complex repairs, destructions), there also is no preoperative period and a visit on the day of the procedure generally is not payable as a separate service. The day of the procedure and the 10 days after are included in the global period, and any visits relating to the procedure on that day and the 10 days following the procedure are not payable separately. Typically, the value of one 99212 or 99213 E&M visit is included in the payment for the procedure.
For CPT codes with global periods of 090, the day before the procedure, the day of the procedure, and 90 days following the procedure are all included. Typically, more than one established patient visit along with hospital management and discharge planning where deemed necessary by the Centers for Medicare & Medicaid Services (CMS) are included, which seems straightforward, but there is a sort of paradox here. An initial evaluation by the surgeon who determines the need for the 090 code (by definition, 090 means major surgery and major surgery means 090) can be separately reported for E&M using modifier -57 (decision for surgery), which means the surgeon seeing the hot abdomen in the emergency department can report an E&M code in addition to the procedure, as can the surgeon who decides to repair a defect after removal of a skin tumor with a flap or graft. The same is not applicable if one performs a simple repair (included with benign or malignant excisions) following Mohs micrographic surgery or an intermediate or complex repair after any form of skin cancer removal. In any event, you are making a decision about what repair is best for the patient and sharing that with him/her while obtaining patient consent, but only 090 codes allow the capture of the decision to perform the procedure.
Which modifiers can you use on the same day as a procedure during the global period?
All is not lost if you perform other activities on the same day as the procedure or during the global period if those other activities are unrelated, which means complications of the procedure cannot be separately reported. If the unrelated cognitive work is reported on the day of a procedure with an E&M code, it should be accompanied by modifier -25 (significant, separately identifiable E&M service by the same physician or other qualified health care professional on the same day of the procedure or other service). If you have an E&M visit unrelated to the procedure within the global period, report it using modifier -24 (unrelated E&M service by the same physician or other qualified health care professional during a postoperative period).
If you perform another procedure on the same day as the primary one, you can use modifier -51 (multiple procedures) to let the payer know you provided other services that are separately reportable. If you do multiples of the same procedure, use modifier -59 (distinct procedural service) to let the payer know that you indeed did multiple procedures and did not submit a typographical error. Modifier -59 also is used when you perform a pair of procedures on separate and distinct lesions that would be disallowed by Mutually Exclusive Edits if done on a single lesion. For example, if you perform a biopsy of a lesion and immediately curette it, you should wait for the pathology report; if the lesion is malignant, only the destruction should be reported, and if it is benign, the only medically necessary service was the biopsy. When biopsy and curettage are performed on 2 separate lesions on the same date of service, payer software will disallow the biopsy charge unless a -59 modifier is attached to indicate that the biopsy was performed on a separate lesion. Medicare has introduced the -XS modifier, which is planned to be phased in to replace the -59 modifier for Medicare patients,2 if and when the CMS sets up their systems to accept the modifier.