Diagnosis Code for Reimbursement Claim: ICD-9-CM 879.8. Code will be replaced by October 2015 and relabeled as ICD-10-CM 879.8. The Short Description Is: Open wound site NOS.
operating system. noun. Definition of operating system for Students. : a program or series of programs that controls the operation of a computer and directs the processing of the user's programs.
What is an operating system? An operating system (OS) is the main program on a computer. The OS also determines how you see information and perform tasks. Most operating systems use a graphical user interface (GUI), which presents information through pictures (icons, buttons, dialog boxes, etc.) as well as words.