LOINCActiveBoth

LOINC Code 18237-8: L. pneumophila atypical IgM Ql (S)

18237-8 is a LOINC code used to identify L. pneumophila atypical IgM Ql (S) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Legionella pneumophila atypical Ab.IgM. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Legionella pneumophila atypical Ab.IgM. It is commonly used with the system or sample type Ser.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Both

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Legionella pneumophila atypical IgM Ab [Presence] in Serum
  • Legionella pneumophila atypical Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Atyp; Autoantibodies; Autoantibody; ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; L pneumo; L pneumo Atyp; L pneumonphila; Legion; Legionela; Microbiology; Ordinal; Pneu; pneum; Pneumophilia; Point in time; PR; QL; Qual; Qualitative; Random; Reactive; Screen; Serum; SR

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

L. pneumophila atypical IgM Ql (S)Legionella pneumophila atypical IgM Ab [Presence] in SerumL pneumo Atyp IgM Ser QlLegionella pneumophila atypical Ab.IgMMICROLegionella pneumophila atypical IgM antibody, BloodPrThr

Frequently asked questions

Code details

Code18237-8
SystemLOINC
Display nameL. pneumophila atypical IgM Ql (S)
DescriptionLegionella pneumophila atypical Ab.IgM
Short nameL pneumo Atyp IgM Ser Ql
ComponentLegionella pneumophila atypical Ab.IgM
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.56

Consumer names

Legionella pneumophila atypical IgM antibody, Blood

Part names

Legionella pneumophila atypical Ab.IgMPrThrPtSerOrdLegionella pneumophila atypical IgMPresence or ThresholdPoint in time (spot)Serum

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 18237-8 | HealthAssure