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LOINC Code 49078-9: FLUBV IgM (CSF) [Mass/Vol]

49078-9 is a LOINC code used to identify FLUBV IgM (CSF) [Mass/Vol] 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 Influenza virus B 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 Influenza virus B 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

  • Influenza virus B IgM Ab [Mass/volume] in Cerebral spinal fluid
  • Influenza virus B Ab.IgM
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; FLUB; FLUBV; FLUV; ID; Immune globulin M; Immunoglobulin M; Infectious Disease; InfectiousDisease; Influ; Influenza B; Influenza B virus; Level; Mass concentration; Microbiology; Neuro; Neurology; Point in time; QNT; Quan; Quant; Quantitative; Random; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid

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

FLUBV IgM (CSF) [Mass/Vol]Influenza virus B IgM Ab [Mass/volume] in Cerebral spinal fluidFLUBV IgM CSF-mCncInfluenza virus B Ab.IgMMICROInfluenza B (Flu B) IgM antibody, Spinal fluidMCnc

Frequently asked questions

Code details

Code49078-9
SystemLOINC
Display nameFLUBV IgM (CSF) [Mass/Vol]
DescriptionInfluenza virus B Ab.IgM
Short nameFLUBV IgM CSF-mCnc
ComponentInfluenza virus B Ab.IgM
PropertyMCnc
TimingPt
System (specimen)CSF
ScaleQn
ClassMICRO
Example unitsmg/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.70

Consumer names

Influenza B (Flu B) IgM antibody, Spinal fluid

Part names

Influenza virus B Ab.IgMMCncPtCSFQnInfluenza virus B IgMMass ConcentrationPoint 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 49078-9 | HealthAssure