Frequently Asked Questions

Our goal is to get you the information you need to utilize LOINC effectively. The answers to these most common questions may be exactly what you need. To guide you, we have organized the questions and answers into six topics. If you do not find what you need, you can also contact us.

LOINC Basics

Common LOINC questions from new users and other tips for starting to use LOINC.

Structure of LOINC Codes and Names

Questions regarding LOINC term composition.

LOINC Content

Technical questions including naming conventions.


Questions about using RELMA effectively and handling technical issues.

Mapping Local Codes to LOINC

From "where do I begin?" to more complex mapping subjects.

LOINC and Other Standards

How LOINC relates to CPT, SNOMED, and ICD.