LOINCActiveObservation

LOINC Code 86203-7: L. intracellularis Ag Immune stain Ql (Tiss)

86203-7 is a LOINC code used to identify L. intracellularis Ag Immune stain Ql (Tiss) 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 Lawsonia intracellularis Ag. It is commonly used with the system or sample type Tiss.

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 Lawsonia intracellularis Ag. It is commonly used with the system or sample type Tiss.

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: Observation
  • Method: Immune stain

What it does not mean

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

Key facts

  • Lawsonia intracellularis Ag [Presence] in Tissue by Immune stain
  • Lawsonia intracellularis Ag
  • Antigen; Antigens; ID; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; Infectious Disease; InfectiousDisease; L intracell; L intracellularis Ag; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; St; Stains; Stn; Tissue; Tissue, unspecified; Vet; Veterinary

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. intracellularis Ag Immune stain Ql (Tiss)Lawsonia intracellularis Ag [Presence] in Tissue by Immune stainL intracell Ag Tiss Ql ImStnLawsonia intracellularis AgMICROLawsonia intracellularis antigen, TissuePrThr

Frequently asked questions

Code details

Code86203-7
SystemLOINC
Display nameL. intracellularis Ag Immune stain Ql (Tiss)
DescriptionLawsonia intracellularis Ag
Short nameL intracell Ag Tiss Ql ImStn
ComponentLawsonia intracellularis Ag
PropertyPrThr
TimingPt
System (specimen)Tiss
ScaleOrd
MethodImmune stain
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.61
Last changed2.63

Consumer names

Lawsonia intracellularis antigen, Tissue

Part names

Lawsonia intracellularis AgPrThrPtTissOrdImmune stainPresence or ThresholdPoint in time (spot)Tissue and Smears

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 86203-7 | HealthAssure