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LOINC Code 49201-7: B. quintana IgM (Body fld) [Titer]

49201-7 is a LOINC code used to identify B. quintana IgM (Body fld) [Titer] 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 Bartonella quintana Ab.IgM. It is commonly used with the system or sample type Body fld.

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 Bartonella quintana Ab.IgM. It is commonly used with the system or sample type Body fld.

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

  • Bartonella quintana IgM Ab [Titer] in Body fluid
  • Bartonella quintana Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B quintana; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; Cat Scratch Disease; Cat Scratch Fever; CSD; Dilution factor; Dilution Factor (Titer); Fl; Fld; FLU; Fluid; ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; Microbiology; Point in time; R quintana; Random; Rochalimae quintana; Rochalimaea quintana; SmQn; Titer; Titered; Titre; Trench fever; Ttr

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. quintana IgM (Body fld) [Titer]Bartonella quintana IgM Ab [Titer] in Body fluidB quintana IgM Titr FldBartonella quintana Ab.IgMMICROBartonella quintana IgM antibody, Body fluidTitr

Frequently asked questions

Code details

Code49201-7
SystemLOINC
Display nameB. quintana IgM (Body fld) [Titer]
DescriptionBartonella quintana Ab.IgM
Short nameB quintana IgM Titr Fld
ComponentBartonella quintana Ab.IgM
PropertyTitr
TimingPt
System (specimen)Body fld
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.75

Consumer names

Bartonella quintana IgM antibody, Body fluid

Part names

Bartonella quintana Ab.IgMTitrPtBody fldSemiQnBartonella quintana IgMTiterPoint in time (spot)Body fluid

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.