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Ophthalmology's coding needs have been met in a barely marginal manner to the present time. The Coding System for Disorders of the Eye is a major step forward, for it gives not only a basic system for the specific use of ophthalmologists but also a system which is compatible with the International Classification of Diseases Adapted (ICDA), new version. Thus, an eye coding system will be available for use within the structure of a general disease coding system for the first time.
The Coding System for Disorders of the Eye provides a six-digit system with the first four digits representing the disease process and the last two digits representing etiology. The first digit is limited to the numbers 6 and 7 to provide compatibility with the ICDA. The system is a somewhat confining precoordinated structure with less flexibility than would occasionally be desired. Nine tables are fashioned so that the
Reinecke RD. Coding System for Disorders of the Eye.. Arch Ophthalmol. 1969;81(3):451-452. doi:10.1001/archopht.1969.00990010453031