Modifiers are two-character suffixes (alpha and/or numeric) that are attached to a procedure code. CPT modifiers are defined by the American Medical Association (AMA). HCPCS Level II modifiers are. defined by the Centers for Medicare and Medicaid Services (CMS).
1 Most desktop computers do not include a monitor. 2  See: How Much Does a Computer Monitor Cost. 3  While most desktops include at least a basic mouse and keyboard, some users prefer to upgrade. 4  A wireless keyboard costs from about $20 to over $200, a wireless mouse from about $20 to $100 or more. For those home office and general-purpose users with limited space, small form or all-in-one desktop computers cost from $1,100 to $2,100. 2  An all-in-one desktop unit hides the processor, memory and hard drive either in the base or behind the integrated flat-screen monitor.
For Microsoft Windows systems, the average selling price (ASP) showed a decline in 2008/2009, possibly due to low-cost netbooks, drawing $569 for desktop computers and $689 for laptops at U.S. retail in August 2008. pocket PC is a hardware specification for a handheld-sized computer (personal digital assistant, PDA) that runs the Microsoft Windows Mobile operating system. It may have the capability to run an alternative operating system like NetBSD or Linux. Pocket PCs have many of the capabilities of modern desktop PCs.