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).
Many chinchilla cages have a wire floor, which is nice for cleanliness but can be hard on chinchilla feet so are best avoided. Wire floors or shelves can be covered with wood to give the chinchilla's feet a break. A nest box, made of wood, should also be provided. Where to Put the Cage. The cage should be placed in a quiet area of the home where human activities won't disturb (and stress) them during the day.