LOINCActiveBoth

LOINC Code 49155-5: R. akari IgM (S) [Titer]

49155-5 is a LOINC code used to identify R. akari 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 akari 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 akari 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 akari IgM Ab [Titer] in Serum
  • Rickettsia akari Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; Microbiology; Point in time; R akari; Random; Ricket; Rickettsial; Rickettsial pox; Serum; SmQn; Spotted fever; SR; 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. akari IgM (S) [Titer]Rickettsia akari IgM Ab [Titer] in SerumR akari IgM Titr SerRickettsia akari Ab.IgMMICRORickettsia akari IgM antibody, BloodTitr

Frequently asked questions

Code details

Code49155-5
SystemLOINC
Display nameR. akari IgM (S) [Titer]
DescriptionRickettsia akari Ab.IgM
Short nameR akari IgM Titr Ser
ComponentRickettsia akari 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 released2.21
Last changed2.75

Consumer names

Rickettsia akari IgM antibody, Blood

Part names

Rickettsia akari Ab.IgMTitrPtSerSemiQnRickettsia akari 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 49155-5 | HealthAssure