Veterinary Extension of SNOMED CT© -April 2021 Release Available

April 1, 2021
The veterinary extension has been updated. This extension release is compatible with the January 2021 International release of SNOMED CT. Licensed SNOMED CT users may obtain a copy of this release by logging into this site. Users in the United States who obtained a SNOMED license through the National Library of Medicine may login to VTSL with a UMLS credentials. Non-US users in member countries and users in non-member countries who have obtained an Affiliate license at SNOMED.ORG can contact VTSL at to establish an account here. Login to VTSL to access this update via the Download page in the Extension Project.

AAHA, AAEP & SAS Problem & Diagnosis Terms Updated - April 2021 Releases Available

April 1, 2021
The Problem & Diagnosis Terms (AAHA, AAEP & SAS) have been updated to include requested concepts and descriptions and to align it with the January 2021 International release of SNOMED CT© and the April 2021 release of VetSCT©. To obtain a copy of these release files, login to VTSL (with a VTSL account or your UMLS credentials) and access them via the Download page in the AAHA, AAEP or SAS projects, respectively.

Client Services...

The Veterinary Terminology Services Laboratory (VTSL) is dedicated to practical application of standardized medical terminologies which facilitates the recording and analysis of clinical information, supports translational research activities and thereby improve animal and public health. Governmental and private organizations contract with VTSL to support practical application of standardized terminologies in veterinary medicine and public health. VTSL client services include terminology management, facilitated collaboration and education.

Terminology Management & Resources

Modern medical terminologies are extremely large and complicated. Practical application almost always means that some portion(s) of any given terminology (often referred to as a subset) is all that is required for specific purpose(s). Subsets of medical terminologies require updating and content addition as the needs of users and medical disciplines advance. Veterinary medicine is often not the focus of large medical terminologies so they may not include adequate veterinary content. Finally, application of a terminology by any particular base of veterinary users implies that the terminology will need to be distributed amongst the various parties and such distribution must be automated and well coordinated in order to assure consistency and currency.

Terminology Resources: The Veterinary Extension of SNOMED CT (VetSCT), the AAHA Diagnostic Terms, the AAEP Diagnostic Terms and NAHLN terminology subsets are all available for download via their respective Projects on this website. NAHLN subsets are available without a login. Access to the download files for VetSCT, AAHA Diagnotic Terms or AAEP Diagnostic Terms requires log in to the system. This is required due to IHTSDO licensing requirements for the use of SNOMED CT content.

Subset Management: Modern medical terminologies are extremely large and complicated. Practical application requires the creation of smaller, more manageable portions of these terminologies (referred to as subsets). VTSL can develop on a contract basis specialized terminologies to organizations and individuals who intend to apply SNOMED-CT® to support modern medical records, evidence-based medicine, sharing of data and outcome, public health monitoring and other projects and software requiring a widely accepted, uniform terminology. These subsets require updating and content addition as the needs of users and medical disciplines advance.

Content Addition: The primary focus of large medical terminologies is human medicine. While human and veterinary medical content often overlap, this still leaves large gaps in content necessary for veterinary data. Content must be expanded to cover those gaps in order to support veterinary data collection and analysis.

Distribution: Successful application of a terminology requires that access be available and content be distributed to all applicable users. This distribution should be automated and well-coordinated in order to assure consistency and currency.

Mapping services: We frequently provide mapping (alignment) services to those who have an existing terminology list.

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Facilitated Collaboration

We help veterinary organizations determine their own best approach to standardized terminologies.

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We make educational materials available to veterinary organizations deploying standardized terminologies and provide educational opportunities to individual veterinarians.

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Terminology Development

We believe that in order for SNOMED-CT® to contribute to Veterinary Medicine, its veterinary content must be enriched. VTSL acts, on behalf of various veterinary stakeholders, to facilitate the incorporation of high quality veterinary terminology content within the SNOMED-CT® universe.

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