Medicare beneficiaries without high risk factors are eligible for screening colonoscopy every 10 years. Beneficiaries at high risk for developing colorectal cancer are eligible once every 24 months.Medicare considers an individual at high risk for developing colorectal cancer as one who has one or more of the following: 1  A close relative (sibling, parent or child) who has had colorectal cancer or an adenomatous polyp.o report screening on a Medicare beneficiary at high risk for colorectal cancer, use HCPCS G0105 and the appropriate diagnosis code that necessitates the more frequent screening.
what do bacteria do? Bacteria from all four groups perform important services related to water dynamics, nutrient cycling, and disease suppression. Some bacteria affect water movement by producing substances that help bind soil particles into small aggregates (those with diameters of 1/10,000-1/100 of an inch or 2-200Âµm).
Living organisms in the soil break down dead organic matter and convert it into forms that can be used by plants. They also attack or compete with disease-causing organisms. â¦ Soil that hasn't been treated with chemicals is alive, with billions--trillions, in a rich organic soil--of microorganisms in a teaspoon of soil.oil organisms break down nutrients in the soil making them  available to plant life they also provide food for higher life  forms such as earth worms which in turn are bene â¦ ficial as they are  the natural tillers of the earth.