Abstract：Objective As a common disease in orthopedic clinic, ankle fracture is usually classified, diagnosed and treated by Lauge-Hansen standard, and coders should establish the corresponding relationship between them through ICD-10. Methods By understanding the anatomical structure of the ankle bone, five types of Lauge-Hansen classification, such as supination-external rotation, pronation-external rotation, supination-internal adduction, pronation-external abduction and vertical compression, were deeply understood, and were analyzed by ICD-10. Results The ICD-10 codes of supination-external rotation type, pronation-external rotation type, pronation-internal adduction type, supination-external abduction type and vertical compression type were established respectively according to their respective damage mechanism, specific index and involved sites. Conclusion Coders should not only be familiar with the specific connotation of Lauge-Hansen classification, but also need to combine the course records, operation records and important positive signs of imaging examination to ensure the obvious complications and concomitant symptoms of fracture were not omitted for coding.
