To a large extent, the ICD to AIS mapping is validated by design, since it was constructed using expert coders and faculty members of AIS as well as members that have extensive ICD experience.   During development, it was thoroughly analyzed and tested by the technical mapping group.   From this perspective, the AAAM developed map is very unique as opposed to maps that have been constructed using data repositories and statistical inference to determine mapping relationships.   The AAAM ICDMap was developed to consistently follow the AIS coding rules.   As part of final review, the maps went through an extensive examination by utilizing a large external group (n=95) of medical coding professionals through the use of a survey tool.

Furthermore, one study validating the map demonstrated moderate to substantial agreement for maximum AIS (MAIS) scores per body region based on expert chart review versus map-derived values, which was comparable to agreement based on prior map versions.

Glerum KM, Zonfrillo MR. Validation of an ICD-9-CM and ICD-10-CM map to AIS 2005 Update 2008. Inj Prev. 2019 Apr;25(2):90-92. Epub 2017 Nov 10.