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).
There are three basic things that comprise a good chinchilla diet: pellets, hay and treats. Pellets and hay do make up most of the diet, but treats are still important to a healthy, happy chinnie! Supplements may also be a good idea to ensure that your chin gets enough vitamins and minerals. Pellets.