# \#fhir **URL:** https://forum.loinc.org/tag/fhir/5.md [Latest](https://forum.loinc.org/latest.md) · [Categories](https://forum.loinc.org/categories.md) · [Tags](https://forum.loinc.org/tags.md) --- ## [LOINC Terminology Service maintenance on 25 Sept 2026](https://forum.loinc.org/t/loinc-terminology-service-maintenance-on-25-sept-2026/3143)
**Author:** [@system](https://forum.loinc.org/u/system)\ **Replies:** 0\ **Last updated:** [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")
This is to alert you of an upcoming system maintenance window regarding the LOINC Terminology Service using HL7® FHIR®. The service will be unavailable on Friday, 25 September 2026 from 8:00 to 10:00 p.m. EDT. We apologi… --- ## [LOINC Terminology Service updated for version 2.83](https://forum.loinc.org/t/loinc-terminology-service-updated-for-version-2-83/3136)
**Author:** [@system](https://forum.loinc.org/u/system)\ **Replies:** 0\ **Last updated:** [August 27, 2026, 2:51pm UTC](https://forum.loinc.org/t/loinc-terminology-service-updated-for-version-2-83/3136 "2026-08-27T14:51:22Z")
The LOINC Terminology Service using HL7® FHIR® has been updated to include content from the recently-released version 2.83. We apologize for any inconvenience this delay may have caused. This update includes numerous st… --- ## [LOINC Questionnaire definition](https://forum.loinc.org/t/loinc-questionnaire-definition/2484)
**Author:** [@nhphong](https://forum.loinc.org/u/nhphong)\ **Replies:** 10\ **Last updated:** [June 29, 2026, 1:29pm UTC](https://forum.loinc.org/t/loinc-questionnaire-definition/2484 "2026-06-29T13:29:36Z")
Hi Community, Recently, I saw Questionnaire definition came long with LOINC Code, so I wonder if those definitions are available in the Release files or not (I am checking the file content right now, but still want to a… --- ## [Identification of Questionnaire codes](https://forum.loinc.org/t/identification-of-questionnaire-codes/2633)
**Author:** [@achattopadhyay](https://forum.loinc.org/u/achattopadhyay)\ **Replies:** 5\ **Last updated:** [June 23, 2026, 8:46pm UTC](https://forum.loinc.org/t/identification-of-questionnaire-codes/2633 "2026-06-23T20:46:07Z")
How to identify Physical Health Questionnaire codes from the entire set of LOINC? --- ## [Fhir.loinc.org | Service unavailable. Performing maintenance. Please try again later](https://forum.loinc.org/t/fhir-loinc-org-service-unavailable-performing-maintenance-please-try-again-later/2987)
**Author:** [@YevhenBatura](https://forum.loinc.org/u/YevhenBatura)\ **Replies:** 3\ **Last updated:** [February 25, 2026, 1:52pm UTC](https://forum.loinc.org/t/fhir-loinc-org-service-unavailable-performing-maintenance-please-try-again-later/2987 "2026-02-25T13:52:32Z")
mb related to LOINC FHIR Terminology Server - #2 by timbriscoe Also does LOINC have some status page for API accessibility? --- ## [New clinical note code](https://forum.loinc.org/t/new-clinical-note-code/2588)
**Author:** [@osbornemj](https://forum.loinc.org/u/osbornemj)\ **Replies:** 6\ **Last updated:** [August 14, 2025, 5:09am UTC](https://forum.loinc.org/t/new-clinical-note-code/2588 "2025-08-14T05:09:04Z")
Hi, I’ve been working on the new eRequesting FHIR IG in Australia. We have a need for a code that indicates the Clinical Context for the group of Service Requests as a value for DocumentReference.code . I noticed a li… --- ## [Issue Fetching Normative Answer Lists via CodeSystem/$lookup API](https://forum.loinc.org/t/issue-fetching-normative-answer-lists-via-codesystem-lookup-api/2641)
**Author:** [@soughosh2023](https://forum.loinc.org/u/soughosh2023)\ **Replies:** 0\ **Last updated:** [July 9, 2025, 8:44am UTC](https://forum.loinc.org/t/issue-fetching-normative-answer-lists-via-codesystem-lookup-api/2641 "2025-07-09T08:44:50Z")
Dear team, My goal is to fetch all LOINC-to-LOINC Answer List mappings, as indicated in the LoincAnswerLinkList.csv file via FHIR API I’ve observed the following behavior: For LOINC codes where the AnswerListLinkType … --- ## [Search for LOINC codes with keywords using the FHIR REST API](https://forum.loinc.org/t/search-for-loinc-codes-with-keywords-using-the-fhir-rest-api/1634)
**Author:** [@aparolini](https://forum.loinc.org/u/aparolini)\ **Replies:** 10\ **Last updated:** [March 18, 2025, 1:43pm UTC](https://forum.loinc.org/t/search-for-loinc-codes-with-keywords-using-the-fhir-rest-api/1634 "2025-03-18T13:43:23Z")
Hello, I’m trying to use the FHIR REST API to find a LOINC code containing a given keyword. A bit like SearchLOINC, but using the API directly. For example I want to find a test result containing “calcium”: According … --- ## [New value set for Universal Lab Orders](https://forum.loinc.org/t/new-value-set-for-universal-lab-orders/2234)
**Author:** [@timbriscoe](https://forum.loinc.org/u/timbriscoe)\ **Replies:** 0\ **Last updated:** [October 29, 2024, 1:43pm UTC](https://forum.loinc.org/t/new-value-set-for-universal-lab-orders/2234 "2024-10-29T13:43:58Z")
For several years, LOINC has published a set of common lab orders. These rankings are published within the primary LOINC table as COMMON\_ORDER\_RANK. An accessory file collecting these values is also made available within… --- ## [Is there a loinc code I can use for an unknown observation?](https://forum.loinc.org/t/is-there-a-loinc-code-i-can-use-for-an-unknown-observation/2037)
**Author:** [@edmondumolu](https://forum.loinc.org/u/edmondumolu)\ **Replies:** 2\ **Last updated:** [July 12, 2024, 6:21pm UTC](https://forum.loinc.org/t/is-there-a-loinc-code-i-can-use-for-an-unknown-observation/2037 "2024-07-12T18:21:57Z")
We’re working on a system that predicts loinc codes for observation resources. I wanted to know if there was an unknown / unspecified observation code that I could use for cases where our system cannot predict the code w… --- ## [Representing "R-a" on FHIR Questionnaires for Panels](https://forum.loinc.org/t/representing-r-a-on-fhir-questionnaires-for-panels/1849)
**Author:** [@sshekdar](https://forum.loinc.org/u/sshekdar)\ **Replies:** 1\ **Last updated:** [May 6, 2024, 1:51pm UTC](https://forum.loinc.org/t/representing-r-a-on-fhir-questionnaires-for-panels/1849 "2024-05-06T13:51:39Z")
LOINC has exposed all Panels as Questionnaires, and with that the R/O/C property of each constituent Observation is modeled using the required field on the Questionnaire item. For example for LOINC 24323-8 Comprehensive … --- ## [Score calculation in questionnaires](https://forum.loinc.org/t/score-calculation-in-questionnaires/1738)
**Author:** [@kgovender](https://forum.loinc.org/u/kgovender)\ **Replies:** 0\ **Last updated:** [March 1, 2024, 2:45pm UTC](https://forum.loinc.org/t/score-calculation-in-questionnaires/1738 "2024-03-01T14:45:10Z")
Hi, I am having trouble making my questionnaire tally scores of drop-downs. I see examples online and on the Loinc website (LHC-Forms Demo) but how is the extension added to generate this functionality? I have managed t… --- ## [FHIR Questionnaire](https://forum.loinc.org/t/fhir-questionnaire/1606)
**Author:** [@xaviergansel](https://forum.loinc.org/u/xaviergansel)\ **Replies:** 1\ **Last updated:** [January 9, 2024, 11:51am UTC](https://forum.loinc.org/t/fhir-questionnaire/1606 "2024-01-09T11:51:10Z")
hi @timbriscoe We had discussions about a “questionnaire” functionality in the LOINC FHIR server. is this available ? if no do you have plan / schedule for it ? thanks Xavier