* [http://www.geoaxon.com/products-solutions/software-solutions/icd-10-search-engine Installable ICD-10 Search Engine on Volume 1, 2 and 3 - have to pay for full functionality]
* [http://www.cms.hhs.gov/MinimumDataSets20/07_RAVENSoftware.asp MS Access MDB file] at United States Department of Health and Human Services in the downloads section at the bottom
* [http://www.mays-systems.com/icd9cm/index.php ICD-9-CM search] - Search and navigate ICD-9-CM
* [http://www.lumrix.net/icd-9.php ICD-9 Search] for Codes, Diagnosis and Medical Procedures
* [http://www.qxmd.com/icd9 ICD9-CM Lookup Tool for the BlackBerry]
* The [http://www.reteclassificazioni.it Italian Portal of Classifications] is the ICD-10 browsing tool of the Italian Collaborating Centre of the World Health Organization for the Family of International Classifications
