In the event that an operative report indicates an assistant
at surgery and the physician documents the purpose of the assistant
appropriately, the next consideration is determining what modifier is
appropriate for the surgical codes. There
are a number of options to choose from and each has its documentation
requirements.
The modifier 80 identifies a surgical assistant. Assisting surgeons usually charge between 20
to 25 percent of their normal fee for performing the surgery alone. This reviewer has noted that often the charge
is the full surgery fee normally charged by the surgeon. This occurs most often due to the coding
software that produces a fee for the main code and does not take into
consideration the modifier.
Modifier 81 is appended when there is a minimum assistant at
surgery. This modifier is used when the
surgeon plans to perform the procedure on his own, but due to circumstances in
the surgical suite requires the assistance of another surgeon for a short
period of time
Modifier 82 indicates that the procedure was performed
requiring the presence of an assistant surgeon when a qualified resident
surgeon was not available. In teaching hospitals, special requirements must be
met to allow billing for an assistant surgeon, and modifier 82 is typically
used in those instances. Check with your Medicare carrier for details.
Modifier AS is added to the primary surgical code when the assistant
at surgery is a physician assistant, nurse practitioner, or clinical nurse
specialist. This modifier again requires
specific documentation. The operative
report should note that no qualified resident was available, the reason for the
assistant’s services, and a statement indicating that the primary surgeon has a
policy of never involving residents in the preoperative, operative, or
postoperative care of his/her patients.
As with medical coding in general, all surgical modifiers
must provide documentation as to the reason for the modifier and appending the
code to an appropriate root surgical code.