People that may benefit from checking blood glucose include those: 1  taking insulina hormone that helps the body use glucose for energy. 2  that are pregnant. 3  having a hard time controlling blood glucose levels. 4  having low blood glucose levels. 5  having low blood glucose levels without the usual warning signs. 6  have ketones from high blood glucose levels.
For patients at high risk for colorectal cancer, a screening barium enema performed as an alternative to colonoscopy (G0105) is reported with code G0120. Medicare will pay for this procedure every two years (at least 23 completed months since the last screening barium enema or colonoscopy). There is no age limit. For patients at normal risk for colorectal cancer, a screening barium enema performed as an alternative to sigmoidoscopy (G0104) is reported with code G0106.
The-GA and-GZ modifiers are used to bill normally covered services that the physician does not believe meet medical-necessity criteria in a particular instance. Modifier-GY is used to bill services that are never covered by Medicare to obtain a denial to bill a secondary insurer that may cover the service.