How to Look Up Medical Diagnosis Codes


Medical diagnostic codes are used by hospitals and physican offices when sending a bill to a patient or to an insurance company. These codes correspond to a particular term or condition that is found in a database of International Classification of Diseases (ICD) codes, and are displayed as an alphanumeric code. You can look up these codes using the Internet.

View a Web Page

  • Go to the website and click the link for "2011 IDC-9-CM Volume 1" Diagnostic Codes.

  • Find the code that you need to look up from your hospital chart, a doctor's bill, a lab test result or other type of medical documentation for a doctor or physician.

  • Click the link for the range of codes that contains the code you need to look-up. Click on a link for the code you need.

Download IDC Information

  • Go to the Diagnosis and Procedures Codes at the Centers for Medicare and Medicaid Services website (see Resources).

  • Click the top link for "Version 28 Full and Abbreviated Code Titles -- Effective October 1, 2010."

  • Click the "Save" button and download the file onto your system. Double-click the ZIP file to view its contents.

  • Double-click "CMS28_Desc_Long_Short_Sg.xls" to open the file in Microsoft Excel. Scroll down the list of codes to see a long and short description.

Tips & Warnings

  • Diagnostic codes can also be found on results from blood tests.


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