Managed Care Glossary of Terms

Interface
A means of communication between two computer systems, two software applications or two modules. Real time interface is a key element in healthcare information systems due to the need to access patient care information and financial information instantaneously and comprehensively. Such real time communication is the key to managing health care in a cost effective manner because it provides the necessary decisionmaking information for clinicians, providers and payers.

Internal Medicine
Generally, that branch of medicine that is concerned with diseases that do not require surgery, specifically, the study and treatment of internal organs and body systems; it encompasses many subspecialties; internists, the doctors who practice internal medicine, often serve as family physicians to supervise general medical care.

(ICD-9-CM) International Classification of Diseases
This is the universal coding method used to document the incidence of disease, injury, mortality and illness. A diagnosis and procedure classification system designed to facilitate collection of uniform and comparable health information. The ICD-9-CM was issued in 1979. This system is used to group patients into DRGs, prepare hospital and physician billings and prepare cost reports. Classification of disease by diagnosis codified into six-digit numbers. See also coding.

Intervention Strategy
A generic term used in public health to describe a program or policy designed to have an impact on an illness or disease. Hence a mandatory seat belt law is an intervention designed to reduce automobile-related fatalities.