With an operating temperature range of -60 degrees to 500degrees Fahrenheit (-50 degrees to 260 degrees Celsius ), this compound resists common engine fluids, including oil, gasoline, ethanol, water and anti-freeze and prevents contamination from moisture and dust.
This is accomplished by inserting a spinal cage or structural bone graft into the vertebral interspace (the area between the two vertebral bodies where the disc is located) and then decorticating an area such as the facet joints and placing bone grafting material.
With interbody techniques some type of device is inserted into the intervertebral space. Itâs important for the coder to be able to differentiate between these devices. Any type of structural bone graft, whether it is an allograft or autograft should be coded with 20931 (allograft) or 20938 (autograft).