1 R82.90 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.  Reimbursement claims with a date of service on or after Oct 1, 2015 require the use of ICD-10-CM codes.
The Whiskers are probably the most famous meerkat group on this planet, starring in Meerkat Manor. They are also an exceptionally interesting group, with a rich life history dominated by the females Holly, Flower and Ella (read more here). The Friends Package for Whiskers includes: A group overview and short history.
Simply put, the mongoose is not a weasel. The meerkat, however, is a mongoose, but since it is such a popular little animal and is in its own genus, you can read about it here - Meerkat Facts. Most mongoose species are highly social animals living in busy groups of 6 to 40 individuals called packs or mobs.