Unrelated procedure or service by the same physician
during the postoperative period
—Unrelated procedure
requiring a return to the operating/procedure room by the
same physician in the global period is identified by modi-
fier 79 and should be utilized when a patient has a second
surgery within the 90 day global period, but it is for an
unrelated event.
For example: A patient has an excision of her gallblad-
der due to gallstones. During the 90 day post operative
period, the primary care physician identifies a breast mass
and sends the patient to the surgeon for evaluation. The
surgeon performs a biopsy of the breast mass and a modi-
fier 79 must be attached to the biopsy to identify that it is
in the 90 day global period, but unrelated to the previous
surgery.
Pre, Post, or Surgical Only
While the global surgical package includes the pre-
operative, surgical, and routine post-operative care, there
are times when this service must be split apart and when
a physician performs only a portion of the global surgical
package. When that occurs, modifiers must be utilized to
capture the appropriate service. Each service is reported
with the actual surgical code of the procedure performed,
with the appropriate modifier to identify which component
of the global surgical package was provided.
The allowable amount of the procedure is divided between
the physicians providing the individual component parts
of the surgical package. The surgical component only
reimburses at 70 percent of the allowable, the pre-operative
management is reimbursed at 10 percent of the allowable
and the post-operative management care is reimbursed at
20 percent of the allowable.
Modifier 54
This modifier identifies the surgical care only and when
reported identifies that the pre-operative and post-operative
work are not included.
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