LOINCActiveObservation

LOINC Code 101149-3: B. burgdorferi IgM index Qn (S+CSF)

101149-3 is a LOINC code used to identify B. burgdorferi IgM index Qn (S+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 Ab.IgM index. It is commonly used with the system or sample type Ser+CSF.

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 Borrelia burgdorferi Ab.IgM index. It is commonly used with the system or sample type Ser+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

What it does not mean

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

Key facts

  • Borrelia burgdorferi IgM Ab index [Units/volume] in Serum and CSF
  • Borrelia burgdorferi Ab.IgM index
  • ABS; Aby; AI; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; B burg; B burgdor; B burgdorferi; Bb; Both serum and cerebrospinal fluid; Burgdorf; Cerebral spinal fluid; Cerebrospinal Fl; Immune globulin M; Immunoglobulin M; Lyme; Lyme disease; Lymes; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; 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

B. burgdorferi IgM index Qn (S+CSF)Borrelia burgdorferi IgM Ab index [Units/volume] in Serum and CSFB burgdor IgM Index Ser+CSF-aCncBorrelia burgdorferi Ab.IgM indexMICROBorrelia burgdorferi IgM index, Serum+Cerebrospinal fluidACnc

Frequently asked questions

Code details

Code101149-3
SystemLOINC
Display nameB. burgdorferi IgM index Qn (S+CSF)
DescriptionBorrelia burgdorferi Ab.IgM index
Short nameB burgdor IgM Index Ser+CSF-aCnc
ComponentBorrelia burgdorferi Ab.IgM index
PropertyACnc
TimingPt
System (specimen)Ser+CSF
ScaleQn
ClassMICRO
Example unitsindex value
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.74
Last changed2.75

Consumer names

Borrelia burgdorferi IgM index, Serum+Cerebrospinal fluid

Part names

Borrelia burgdorferi Ab.IgM indexACncPtSer+CSFQnBorrelia burgdorferi IgM indexArbitrary ConcentrationPoint in time (spot)Serum and CSF

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 101149-3 | HealthAssure