Using an ICD-9-CM code book, select the appropriate code(s) for the diagnostic statements given in the following questions

The ________ part of a long bone is very dense and found on the outside

A. cortical C. bone marrow B. cancellous D. periosteum

Medicare carriers must process a redetermination within:

A) 30 days. B) 60 days. C) 90 days. D) 180 days.