HealthAssure
HealthAssureGood Life
LOINCActiveBoth

LOINC Code 22478-2: R. spotted fever group IgM (CSF) [Titer]

22478-2 is a LOINC code used to identify R. spotted fever group IgM (CSF) [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 spotted fever group 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 Rickettsia spotted fever group 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: Both

What it does not mean

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

Key facts

  • Rickettsia spotted fever group IgM Ab [Titer] in Cerebral spinal fluid
  • Rickettsia spotted fever group Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; Dilution factor; Dilution Factor (Titer); ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; Microbiology; Neuro; Neurology; Point in time; Random; Rick SF; Ricket; Rickettsial; SmQn; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; 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. spotted fever group IgM (CSF) [Titer]Rickettsia spotted fever group IgM Ab [Titer] in Cerebral spinal fluidRick SF IgM Titr CSFRickettsia spotted fever group Ab.IgMMICRORickettsia spotted fever group IgM antibody, Spinal fluidTitr

Frequently asked questions

Code details

Code22478-2
SystemLOINC
Display nameR. spotted fever group IgM (CSF) [Titer]
DescriptionRickettsia spotted fever group Ab.IgM
Short nameRick SF IgM Titr CSF
ComponentRickettsia spotted fever group Ab.IgM
PropertyTitr
TimingPt
System (specimen)CSF
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0n
Last changed2.75

Consumer names

Rickettsia spotted fever group IgM antibody, Spinal fluid

Part names

Rickettsia spotted fever group Ab.IgMTitrPtCSFSemiQnRickettsia spotted fever group IgMTiterPoint in time (spot)Cerebral spinal 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.

LOINC Code 22478-2 | HealthAssure