Abstract: Medical center as part of the hospital information construction, HIS requires fee audit and charge control on the physical examination information system, which is to develop one seamless charge interface between these two information software systems for sharing charge information. This paper introduces the goals and approach of this interface, discusses charge service differences between medical examination and HIS, analyzes advantages and disadvantages of three different interface proposals, at last presents one proper charge interface scheme in detail.

Key words: physical examination information system, HIS, heterogeneous system integration, data exchange, charge interface