# LOINC Terminology Service maintenance on 25 Sept 2026

**URL:** <https://forum.loinc.org/t/loinc-terminology-service-maintenance-on-25-sept-2026/3143>\
**Category:** General\
**Tags:** fhir, loinc-fhir-ts\
**Created:** [September 10, 2026, 6:13pm UTC](https://forum.loinc.org/t/loinc-terminology-service-maintenance-on-25-sept-2026/3143 "2026-09-10T18:13:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![system](https://forum.loinc.org/uploads/default/original/1X/dbab97ce9b2987d788a376e254fcaae249f3b672.png) [@system](https://forum.loinc.org/u/system)\
**Post date:** [September 10, 2026, 6:13pm UTC](https://forum.loinc.org/t/loinc-terminology-service-maintenance-on-25-sept-2026/3143/1 "2026-09-10T18:13:23Z")

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This is to alert you of an upcoming system maintenance window regarding the [LOINC Terminology Service](https://loinc.org/fhir) using HL7® FHIR®. The service will be unavailable on Friday, 25 September 2026 from 8:00 to 10:00 p.m. EDT. We apologize for any inconvenience this may cause.