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LOINC Code 31050-8: Coxsackievirus A9 Ab CF (Body fld) [Titer]

31050-8 is a LOINC code used to identify Coxsackievirus A9 Ab CF (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 Coxsackievirus A9 Ab. 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 Coxsackievirus A9 Ab. 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
  • Method: Comp fix

What it does not mean

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

Key facts

  • Coxsackievirus A9 Ab [Titer] in Body fluid by Complement fixation
  • Coxsackievirus A9 Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; CAV; CF; Comp fixation; Compfix; Complement fixation; Coxsackie; Coxsackie virus; CV; CV A9; Dilution factor; Dilution Factor (Titer); Fl; Fld; FLU; Fluid; ID; Infectious Disease; InfectiousDisease; Microbiology; Point in time; Random; SmQn; 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

Coxsackievirus A9 Ab CF (Body fld) [Titer]Coxsackievirus A9 Ab [Titer] in Body fluid by Complement fixationCV A9 Ab Titr Fld CFCoxsackievirus A9 AbMICROCoxsackievirus A9 antibody, Body fluidTitr

Frequently asked questions

Code details

Code31050-8
SystemLOINC
Display nameCoxsackievirus A9 Ab CF (Body fld) [Titer]
DescriptionCoxsackievirus A9 Ab
Short nameCV A9 Ab Titr Fld CF
ComponentCoxsackievirus A9 Ab
PropertyTitr
TimingPt
System (specimen)Body fld
ScaleSemiQn
MethodComp fix
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.75

Consumer names

Coxsackievirus A9 antibody, Body fluid

Part names

Coxsackievirus A9 AbTitrPtBody fldSemiQnComp fixTiterPoint in time (spot)Body fluidComplement fixation

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.