# LOINC

License: restricted (LicenseRef-Regenstrief-Institute-Inc-terms); Mdexa hosting: link-only. Second pass: derivatives: [甲类] 改编确受限制（字段不得改动、文档不得修改、除翻译外不授予演绎权、翻译权利须转让），但原文同时明示了允许的改编路径：可加新字段、可为本地需要增删记录（新码须加 X 前缀）、可将部分内容并入其他产品与服务、可翻译（须事先通知）。按第25、28条的精神，原文明示许可路径时取 conditional 而非 no。按原文应取 conditional；比拟定更宽，按规则不自动放宽，交采纳环节决定。 | redistribution: [乙类] 原文明示复制分发不限份数，但每份须附版权声明与许可、版本号；并入产品须附指定声明。再分发被涉及且附条件，应为 conditional；另 [甲类] RELMA 社区映射信息不得复制或分发（可分离部分）。

- Commercial use: Conditional · Derivatives: Conditional · Redistribution: Conditional · File on Mdexa: No
- License status: Restricted (LicenseRef-Regenstrief-Institute-Inc-terms)
- Mdexa hosting: Link only — License restricted, judged by public rules and checked by a second-pass model. Link only.
- Last verified: 2026-11-14
- Card: https://mdexa.com/datasets/loinc/

## Key facts

- Domain: Standards and terminology
- Content type: Terminologies and coding systems
- Size: —
- Language: English
- Modality: Text, Tabular
- Publisher: Regenstrief Institute, Inc.
- Year: —

## Commercial use of LOINC

- Commercial use: Conditional.
The overall verdict takes the strictest part; the parts carry different licenses, listed below.
- License status: Restricted.
- Conditions: Notice kept
- License part: main data — Restricted (NOASSERTION)
- License part: Group 1 Artifacts and Group 3 Artifacts — Restricted (NOASSERTION)
- License part: Group 1 Documents, Group 2 Documents, and Group 3 Documents — Restricted (NOASSERTION)
- License part: RELMA Community Mappings feature database — Restricted (NOASSERTION)
Verdicts record what sources state and are not legal advice.

## LOINC license evidence

a restricted part cannot be separated or the boundary is unstated: strictest part applies Derivatives are conditional: the license names the permitted ways (adding fields, adding or deleting records with an X-code, translation with notice) and forbids other derivative works. The license says some content carries third-party copyright terms: check the exceptions before use.

- **Terms of use page**: Statement found in snapshot s02 (page) — "LOINC is available freely under an open license. It is free for use in both commercial and non-commercial systems. This document sets forth the terms for use." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The Group 1 Artifacts and Group 1 Documents are Copyright © Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. All rights reserved." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The Group 2 Artifacts, Group 2 Documents, Group 3 Artifacts, and Group 3 Documents are Copyright © Regenstrief Institute, Inc. All rights reserved." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "LOINC® and RELMA® are registered United States trademarks of Regenstrief Institute, Inc. Regenstrief Institute, Inc. and, as applicable, the LOINC Committee reserve all other rights not expressly granted herein." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Permission is hereby granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the Licensed Materials for any commercial or non-commercial purpose, subject to the following terms and conditions:" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "neither the Licensed Materials, nor any portion thereof, may be used for the purpose of developing or promulgating a different standard for identifying patient observations" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The name of, or any contents of, any fields in the Group 1 Artifacts shall not be changed. The contents of any fields in the Group 3 Artifacts shall not be changed." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Records may be deleted from the LOINC Table or LOINC Table Core to deal with local requirements." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Records also may be added to the LOINC Table and LOINC Table Core to deal with local requirements, provided that if new records are added, any new entry in the LOINC_NUM field of such new records must contain a leading alphabetic “X”" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The Group 1 Documents, Group 2 Documents, and Group 3 Documents may not be modified, nor may derivative works be created, without the prior written permission of the Regenstrief Institute, Inc." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The LOINC parts and LOINC part hierarchies shall not be used in any manner except as they are presented in the Licensed Materials (and/or in other formats of distribution approved by Regenstrief Institute, Inc.)" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "In addition to its use with the RELMA program, the LOINC Table that is obtained with the RELMA program may be used independently and the LOINC Table also may be modified as permitted herein." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The other database tables from the RELMA database or the associated search index files may not be used or modified except in conjunction with the authorized use of the RELMA program, unless prior written permission is granted by the Regenstrief Institute, Inc." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "No additional permission to modify or distribute this internet-based content is granted through the use of the RELMA program." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The accuracy and completeness of the information in the RELMA Community Mappings feature is not verified by Regenstrief Institute, Inc. or the LOINC Committee." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The information provided by the RELMA Community Mappings feature may not be copied or distributed." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Access to the information provided by the RELMA Community Mappings feature may not be shared." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Regenstrief Institute, Inc. shall have a non-exclusive, irrevocable license, without payment or fees, to use mappings submitted to the RELMA Community Mappings feature for any and all purposes related to LOINC, RELMA, and Regenstrief Institute Inc.’s mission" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "“This material contains content from LOINC ( http://loinc.org ). LOINC is copyright © Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license ." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Where the product or service is distributed on a fixed storage medium, a text file containing this notice also must be stored on the storage medium in a file called “LOINC_short_license.txt.”" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Any such product or service is either (1) in compliance with all applicable third-party copyright license terms as described in the Notice of Third-Party Content and Copyright Terms section of this license" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Any information that is extracted from the Licensed Material must always be associated with the corresponding identifier from LOINC (e.g., LOINC code, LOINC Answer List ID, LOINC Answer String ID, LOINC Part Number, or LOINC Group ID) and include the corresponding LOINC display name:" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Including the appropriate version number of the Licensed Material is strongly encouraged, but not required." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Use and distribution of the Licensed Materials in ways that are not specifically discussed herein shall always be accompanied by the notice provided in Section 10 hereof." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The names “Regenstrief,” “Regenstrief Foundation,” “Regenstrief Institute, Inc.,” and “LOINC Committee” may not be used in a way which could be interpreted as an endorsement or a promotion of any product or service without prior written permission of the Regenstrief Institute, Inc." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s03 (terms-page) — "There is no limit on the number of copies of the Licensed Materials that may be made and distributed" — https://loinc.org/license/ (2026-11-13; Page opened)
- **Terms of use page**: Statement found in snapshot s03 (terms-page) — "provided that each copy must include this Copyright Notice and License, and must include the appropriate version number of the Licensed Materials if the Licensed Materials have a version number, or the release date if the Licensed Materials do not have a version number." — https://loinc.org/license/ (2026-11-13; Page opened)
- **Terms of use page**: Statement found in snapshot s03 (terms-page) — "Subject to Section 1 and the other restrictions hereof, portions of the Group 1 Artifacts or Group 3 Artifacts may be incorporated into other products and services, such as laboratory test compendiums, data dictionaries, online terminology services" — https://loinc.org/license/ (2026-11-13; Page opened)
- **Terms of use page**: Statement found in snapshot s03 (terms-page) — "Regenstrief Institute, Inc. shall be notified via email at [contact address removed] prior to translation of any of the Licensed Materials into a language other than English." — https://loinc.org/license/ (2026-11-13; Page opened)
- **Terms of use page**: Statement found in snapshot s03 (terms-page) — "Except for the right to translate the Licensed Materials into a language other than English pursuant to this section, no other right to create a derivative work of any of the Licensed Materials is hereby granted." — https://loinc.org/license/ (2026-11-13; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The name of, or any contents of, any fields in the Group 1 Artifacts shall not be changed." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Any such translation is a derivative work, and Regenstrief Institute, Inc. shall be assigned and hereby is assigned all right, title and interest in and to such derivative work" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "The LOINC parts and LOINC part hierarchies shall not be used in any manner except as they are presented in the Licensed Materials" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "There is no limit on the number of copies of the Licensed Materials that may be made and distributed, provided that each copy must include this Copyright Notice and License" — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Under the terms of the Affiliate License, use of SNOMED CT in countries that are not IHTSDO Members is subject to reporting and fee payment obligations." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "is available to authorized UMLS Metathesaurus Licensees." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "Inclusion in LOINC does not imply permission to use or administer third-party content without following the third-party content owner’s license and/or terms of use." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s02 (page) — "may not be used in a way which could be interpreted as an endorsement or a promotion of any product or service without prior written permission of the Regenstrief Institute, Inc." — https://loinc.org/license/ (2026-11-12; Page opened)
- **Terms of use page**: Statement found in snapshot s03 — "New fields may be added to the Group 1 Artifacts and Group 3 Artifacts to attach additional information to existing LOINC records." — https://loinc.org/license/ (2026-11-14; Page opened)
- **Terms of use page**: Statement found in snapshot s03 — "Any such product or service is either (1) in compliance with all applicable third-party copyright license terms as described in the Notice of Third-Party Content and Copyright Terms section of this license, or (2) third-party copyrighted contents (e.g., third-party survey instruments and answers) ar" — https://loinc.org/license/ (2026-11-14; Page opened)

## Source and lineage

—

## Known issues with LOINC

—

## Preflight

Not run (data not ingested).

## Downloading LOINC and API access

Mdexa does not serve files. Original source:
- https://loinc.org/
- https://loinc.org/license/

## Citing LOINC

No recommended citation text.

## Machine-readable

- JSON: https://mdexa.com/datasets/loinc.json
- 2026-11-14 The license says some content carries third-party copyright terms: check the exceptions before use.
- 2026-11-14 Derivatives are conditional: the license names the permitted ways (adding fields, adding or deleting records with an X-code, translation with notice) and forbids other derivative works.
- 2026-11-14 Listed on 2026-11-14. Judged by public rules and checked a second time before listing. The two passes disagreed; the stricter reading is carried: Second pass: derivatives: [甲类] 改编确受限制（字段不得改动、文档不得修改、除翻译外不授予演绎权、翻译权利须转让），但原文同时明示了允许的改编路径：可加新字段、可为本地需要增删记录（新码须加 X 前缀）、可将部分内容并入其他产品与服务、可翻译（须事先通知）。按第25、28条的精神，原文明示许可路径时取 conditional 而非 no。按原文应取 conditional；比拟定更宽，按规则不自动放宽，交采纳环节决定。 | redistribution: [乙类] 原文明示复制分发不限份数，但每份须附版权声明与许可、版本号；并入产品须附指定声明。再分发被涉及且附条件，应为 conditional；另 [甲类] RELMA 社区映射信息不得复制或分发（可分离部分）。

## Continue in this database

This record is one of 109 processed and verified records (datasets, data resources and open models). To find others, call `https://mcp.mdexa.com/v1/datasets?q=<words>` or connect the MCP server at `https://mcp.mdexa.com/mcp`; no key is needed for 20 calls per minute. Rows are under 1 KB; an empty result means "not listed". For a list of items, one batch check (free account) returns a report. Guide: /agents.md. Similar records: ICD-11 (https://mdexa.com/datasets/icd-11/); RxNorm (https://mdexa.com/datasets/rxnorm/); SNOMED CT (https://mdexa.com/datasets/snomed-ct/).