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Abstract
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This paper describes a computerized conversion table which maps
discharge diagnoses coded using the Clinical Modification of the 9th Revision
of the International Classification of Diseases (ICD-9CM) into 1985
Abbreviated Injury Scale (AIS) scores. The development of the table is
described in detail with major assumptions used in conversion of ICD to AIS
discussed. In consultation with the AAAM Injury Scaling Committee, 1948 of
the 2072 injury related ICD-9CM rubrics were assigned valid AIS scores
between 1 and 6. The remaining 124 rubrics were assigned AIS scores of 9,
either because the ICD description lacked sufficient qualifying information
for determining severity or because injuries of very different levels of
severity were incorporated within a single diagnostic rubric. The application
of the conversion system using uniform hospital discharge abstract data is
illustrated by two examples relevant to the management and evaluation of
regionalized trauma systems. |