The International Classification of Health Interventions (ICHI) is a system of classifying procedure codes being developed by the World Health Organization. It is currently only available as a beta release.
It is designed to replace the "International Classification of Procedures in Medicine" (ICPM), a system that was developed in the 1970s but which never received the same international acceptance as ICD-9. As a result, most nations developed their own incompatible standards for coding procedures and interventions.
It is largely derived from the "Australian Classification of Health Interventions" (ACHI), a portion of the Australian standard ICD-10-AM, which in turn was largely derived from ICD-10 and the United States extension ICD-9-CM.
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