Is There a Free ICD-9 Code Look-up Site?

Is There a Free ICD-9 Code Look-up Site? is a free website that displays information on ICD-9 codes. The website can connect ICD-9 and HCPCS codes to create over 5.3 million links in between.

To use the website, first type an ICD-9 code in the search box, and hit Enter. Click an item from the results to see all possible diagnoses. For instance, the website indicates that the ICD-9 code indicates the inflammation of the thyroid gland.

The website warns that some codes are only valid in the United States. As such, make sure to check if a code is internationally accepted in the case of a medical emergency when abroad. also warns that the U.S. Department of Health and Human Services issued a rule that all health care providers must switch to ICD-10 codes. Use the free conversion tool on the website to see the ICD-10 equivalent of an ICD-9 code.