What is a little white round pill with a break line on one side and the numbers 223 on the other side?

Not Medical Advice:White round pill with imprint 223 is Oxycodone hydrochloride 5 mg.It is used in the treatment of pain. Drug class: narcotic analgesics

Thursday, February 02 2012
Source: http://www.drugs.com/imprints/223-15311.html