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LOINC Code 49153-0: R. conorii IgM (Body fld) [Titer]

49153-0 is a LOINC code used to identify R. conorii 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 Rickettsia conorii 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 Rickettsia conorii 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

  • Rickettsia conorii IgM Ab [Titer] in Body fluid
  • Rickettsia conorii Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; Boutonneuse fever; Dilution factor; Dilution Factor (Titer); Fl; Fld; FLU; Fluid; ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; Mediterranean spotted fever; Microbiology; Point in time; R conorii; Random; Ricket; Rickettsial; SmQn; Spotted fever; Titer; Titered; Titre; 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

R. conorii IgM (Body fld) [Titer]Rickettsia conorii IgM Ab [Titer] in Body fluidR conorii IgM Titr FldRickettsia conorii Ab.IgMMICRORickettsia conorii IgM antibody, Body fluidTitr

Frequently asked questions

Code details

Code49153-0
SystemLOINC
Display nameR. conorii IgM (Body fld) [Titer]
DescriptionRickettsia conorii Ab.IgM
Short nameR conorii IgM Titr Fld
ComponentRickettsia conorii 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

Rickettsia conorii IgM antibody, Body fluid

Part names

Rickettsia conorii Ab.IgMTitrPtBody fldSemiQnRickettsia conorii 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.