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.
Updated March 10, 2017. Often abbreviated as OS, an operating system is powerful, and usually large, program that controls and manages the hardware and other software on a computer. All computers and computer-like devices have operating systems, including your laptop, tablet, desktop, smartphone, smartwatch, router...