LOINC Community Forum

Topic	Replies	Views	Activity
Seeking examples of Lab Order Messaging (HL7 v2.x, v3, FHIR) between any sources General Stan Huff and Jim Case are looking for example messaging in order to help plan the modeling on SNOMED International’s side of the LOINC SNOMED CT Ontology. I don’t believe they were specific as to the source or recipien…	0	45	July 30, 2026
README: Welcome to LOINC Community Forum! :wave: General	0	2479	July 6, 2023
LOINC code for Liver Cancer BCLC Stage General	2	34	August 31, 2026
LOINC 2.83 Drug Tox Screen and Confirm General	1	35	August 28, 2026
LOINC Terminology Service updated for version 2.83 General fhir	0	28	August 27, 2026
Trouble with New LOINC Website General	5	107	August 6, 2026
Representing Electronic Signatures in LOINC General	1	61	July 30, 2026
PhenX LOINC codes General	4	129	July 17, 2026
HbA1c LOINC 59261-8 (IFCC-RMP method but % units) General	1	105	July 17, 2026
Coronary Calcium Score General	2	22	July 17, 2026
Website system maintenance 2026-07-19 General	0	28	July 13, 2026
Unable to access RELMA General	3	57	July 6, 2026
4476-8 Complement Cl esterase inhibitor.functional [Mass/volume] in Serum or Plasma may be incorrect General	8	128	July 3, 2026
When and where to use similar LIONC codes General	2	64	July 1, 2026
Umbilical Cord Tissue Drug testing General	1	42	June 29, 2026
LOINC Answer List LL5355-4 General	1	71	June 29, 2026
LOINC Questionnaire definition General fhir	10	227	June 29, 2026
Identification of Questionnaire codes General fhir	5	86	June 23, 2026
LOINC Comparisons General	2	49	June 23, 2026
Pre-submission guidance on cfDNA fetal-antigen and carrier-result modeling General	8	87	June 22, 2026
Class of antibiotics General	4	49	June 18, 2026
Authentication issue (Excel PowerQuery) General	9	75	June 17, 2026
Need help to map placement of NEPHROURETEROSTOMY RF General	3	35	June 17, 2026
Help identifying the best LOINC code for CDA Specimen Collection Template General	0	26	June 15, 2026
RDW-CV to RDW-SD Mapping - Why? General	1	73	June 15, 2026
LOINC Offline Browser with MCP and Agent Skill General download	1	31	June 15, 2026
F10 versus f449 General	2	58	May 29, 2026
Discrepancy Between LOINC Radiology Class vs Playbook General	1	63	April 25, 2026
Website system maintenance on 2026-04-28 General	0	20	April 24, 2026
Interpreting MG Breast versus MG Guidance codes General	0	20	April 23, 2026