LOINCActiveObservation

LOINC Code 75190-9: Treponemal test was reactive [CDC.CS]

75190-9 is a LOINC code used to identify Treponemal test was reactive [CDC.CS] 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 Treponemal test was reactive. It is commonly used with the system or sample type ^Patient.

Reviewed by HealthAssure Clinical TeamUpdated 21 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 Treponemal test was reactive. It is commonly used with the system or sample type ^Patient.

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: Observation
  • Method: CDC.CS

What it does not mean

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

Key facts

  • Treponemal test was reactive [CDC.CS]
  • Treponemal test was reactive
  • Centers for Disease Control and Prevention; Centers for Disease Control Congenital Syphilis (CS) Case Investigation and Report; Finding; Findings; Ordinal; Point in time; QL; Qual; Qualitative; Random; Reac; React; Screen; Survey; SURVEY.CDC

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

Treponemal test was reactive [CDC.CS]Treponemal test was reactiveSURVEY.CDCFindPt^PatientOrd

Frequently asked questions

Code details

Code75190-9
SystemLOINC
Display nameTreponemal test was reactive [CDC.CS]
DescriptionTreponemal test was reactive
ComponentTreponemal test was reactive
PropertyFind
TimingPt
System (specimen)^Patient
ScaleOrd
MethodCDC.CS
ClassSURVEY.CDC
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.48
Last changed2.48

Part names

Treponemal test was reactiveFindPt^PatientOrdCDC.CSFindingPoint in time (spot)Centers for Disease Control Congenital Syphilis (CS) Case Investigation and Report

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 75190-9 | HealthAssure