LOINCActiveBoth

LOINC Code 25604-0: R. prowazekii IgM (S) [Titer]

25604-0 is a LOINC code used to identify R. prowazekii IgM (S) [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 prowazekii Ab.IgM. It is commonly used with the system or sample type Ser.

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 prowazekii Ab.IgM. It is commonly used with the system or sample type Ser.

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 prowazekii IgM Ab [Titer] in Serum
  • Rickettsia prowazekii Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Brill-zinsser disease; Dilution factor; Dilution Factor (Titer); Epidemic typhus; ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; Microbiology; Point in time; R prowazek; R prowazekii; Random; Recrudescent typhus; Ricket; Rickettsial; Serum; SmQn; Sporadic typhus; SR; Titer; Titered; Titre; Ttr; Typhus

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. prowazekii IgM (S) [Titer]Rickettsia prowazekii IgM Ab [Titer] in SerumR prowazek IgM Titr SerRickettsia prowazekii Ab.IgMMICRORickettsia prowazekii IgM antibody, BloodTitr

Frequently asked questions

Code details

Code25604-0
SystemLOINC
Display nameR. prowazekii IgM (S) [Titer]
DescriptionRickettsia prowazekii Ab.IgM
Short nameR prowazek IgM Titr Ser
ComponentRickettsia prowazekii Ab.IgM
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.75

Consumer names

Rickettsia prowazekii IgM antibody, Blood

Part names

Rickettsia prowazekii Ab.IgMTitrPtSerSemiQnRickettsia prowazekii IgMTiterPoint in time (spot)Serum

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 25604-0 | HealthAssure