Articles

Modifier 66 fact sheet

Surgeons append modifier 66 to claims indicating they were on a team of surgeons performing a specific procedure on the same...

Drugs and biologicals

View this page to easily locate information related to drugs and biologicals, such as billing and coding guidelines, related...

Modifier 77

View this article for instructions on how and when to use modifier 77.

Modifier 24 flowchart

Use this decision flowchart to assist in correctly applying the 24 modifier.