ABN stands for Advanced Beneficiary Notification. An ABN must be signed prior to providing a Medicare service or test to document that the patient is willing to assume responsibility for payment of services that Medicare may not cover when subject to either National or Local Coverage Determinations (NCD) or (LCD).
Chinchillas are crepuscular (most active around dawn and dusk) rodents, slightly larger and more robust than ground squirrels. They are native to the Andes mountains in South America and live in colonies called  herds  at high elevations up to 4,270 m (14,000 ft).
A beige chinchilla is cream to light tan in color with a white belly. Like ebonies, beige can come in both hetero-and homozygous states. Most beige are cream to light tan in color and have a crisp white belly.Some will have speckles on their ears. black velvet chinchilla has a dark veiling of black over the top of the body with a crisp white belly. This color variety carries the Touch of Velvet gene. The TOV gene means that the animal has a dark veiling over the top and a lighter underbelly.