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LOINC Code 28043-8: B. burgdorferi 41kD IgM IB Ql (CSF)

28043-8 is a LOINC code used to identify B. burgdorferi 41kD IgM IB Ql (CSF) 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 Borrelia burgdorferi 41kD Ab.IgM. It is commonly used with the system or sample type CSF.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Borrelia burgdorferi 41kD Ab.IgM. It is commonly used with the system or sample type CSF.

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: IB

What it does not mean

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

Key facts

  • Borrelia burgdorferi 41kD IgM Ab [Presence] in Cerebral spinal fluid by Immunoblot
  • Borrelia burgdorferi 41kD Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B burg; B burgdor; B burgdor41kD; B burgdorferi; Bb; Blt; Burgdorf; Cerebral spinal fluid; Cerebrospinal Fl; ID; IMMUNE BLOT; Immune globulin M; Immunobl; Immunoblot; Immunoglobulin M; Infectious Disease; InfectiousDisease; Lyme; Lyme disease; Lymes; Microbiology; Neuro; Neurology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; RIBA; Screen; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; WB; WBLOT; West blot; West blt; Western blot

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

B. burgdorferi 41kD IgM IB Ql (CSF)Borrelia burgdorferi 41kD IgM Ab [Presence] in Cerebral spinal fluid by ImmunoblotB burgdor41kD IgM CSF Ql IBBorrelia burgdorferi 41kD Ab.IgMMICROBorrelia burgdorferi 41kD IgM antibody, Spinal fluidPrThr

Frequently asked questions

Code details

Code28043-8
SystemLOINC
Display nameB. burgdorferi 41kD IgM IB Ql (CSF)
DescriptionBorrelia burgdorferi 41kD Ab.IgM
Short nameB burgdor41kD IgM CSF Ql IB
ComponentBorrelia burgdorferi 41kD Ab.IgM
PropertyPrThr
TimingPt
System (specimen)CSF
ScaleOrd
MethodIB
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.73

Consumer names

Borrelia burgdorferi 41kD IgM antibody, Spinal fluid

Part names

Borrelia burgdorferi 41kD Ab.IgMPrThrPtCSFOrdIBBorrelia burgdorferi 41kD IgMPresence or ThresholdPoint in time (spot)Cerebral spinal fluidImmunoblot

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 28043-8 | HealthAssure