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[bioontology-support] Question regarding CPT codes

John Graybeal jgraybeal at
Mon Sep 28 13:32:05 PDT 2020

Hi to everyone who is discovering CPT is no longer on BioPortal. We understand that this is a very important database, and we tried to convince the providers of it to let BioPortal continue to serve it.

As I described in previous posts, unfortunately the owners of CPT make their money by charging people to use it, and determined that the way BioPortal was serving it was not consistent with the intenttion of their license. They requested that we take it down, and we agreed to their request. We would be happy to install it again if the owners of the license ever allow that again.

Otherwise, there is a path by which you can access CPT separately (or install it on your own OntoPortal Appliance). If you visit the following post from our archives, you can see the process and links you will need to install CPT on your system using a UMLS license.


On Sep 28, 2020, at 8:24 AM, David Cortese  wrote:

I noticed a change in the website… the banner says there is a new release and the CPT ontology will be removed…is this change permanent? I hope not, as I found it a valuable resource for searching for codes!

David Cortese, MD
bioontology-support mailing list
bioontology-support at<mailto:bioontology-support at>

Good morning.

Are you no longer offering CPT codes and RVU values through your portal?

Kind regards,

George Coppit, MD FACS
Head & Neck Oncology/Endocrine Surgery/Sleep Surgery
Frederick Health Medical Group

Name: JeffB



Hi there, I look up CPT codes on your site which is very helpful. This morning, the site seems to be down. Is this going to be brought back and fixed today?

Name: Judith Colecchi




why has the CPT ontology has been removed?
Is there any ontology (such as Snomed) that maps to a CPT code?
If no- what ontologies on this site can be used to identify medical and surgical procedures?

This is a hugely important ontology-

John Graybeal
Technical Program Manager
Center for Expanded Data Annotation and Retrieval /+/ NCBO BioPortal
Stanford Center for Biomedical Informatics Research
650-736-1632  | ORCID  0000-0001-6875-5360

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