The International Classification of Diseases (ICD) is a system of universal coding that assigns uniform definitions to diagnoses.  The world is about to shift from ICD-9 (version 9) to ICD-10.

This is good news for those with X and Y chromosome variations, because ICD-9 was woefully inadequate in coding diagnoses for sex chromosome anomalies, and this coding is frequently vital to securing insurance coverage (in the USA) and to having the conditions recognized and treated under other government healthcare programs.  ICD-10 is far more complete.

Click here for a list of ICD-9 and ICD-10 codes that specifically apply to those with X and Y chromosome variations.