The International Statistical Classification of
Diseases and Related Health Problems was created by the World Health
Organization as an international language between health care
providers. So no matter where you live or where you go, your medical
history can be "read" by any health care provider.
Here are some sites to help you look up an ICD-9 Code. All are free.
ICD9.crhisendres.com
Wikipedia
ICD9Data.com