LOINCActive

LOINC Code 45242-5: Tuberculosis treatment start date

45242-5 is a LOINC code used to identify Tuberculosis treatment start date 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 Tuberculosis treatment start date. 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 Tuberculosis treatment start date. 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
  • Method: Reported

What it does not mean

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

Key facts

  • Tuberculosis treatment start date
  • Current LOINC codes focus on diagnosis, not treatment. However, there is a code for medication administered. If that were used, the actual medication would be carried in OBX.5. Can we assume that TB treatment is the provision of medication?
  • ID; Infectious Disease; InfectiousDisease; Lung; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; Started; TB; TB Tx start date; Tx

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

Tuberculosis treatment start dateTB Tx start dateARTDatePt^PatientQn

Frequently asked questions

Code details

Code45242-5
SystemLOINC
Display nameTuberculosis treatment start date
Short nameTB Tx start date
ComponentTuberculosis treatment start date
PropertyDate
TimingPt
System (specimen)^Patient
ScaleQn
MethodReported
ClassART
Example unitsMMDDYY
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.67

Part names

Tuberculosis treatment start dateDatePt^PatientQnReportedPoint in time (spot)

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 45242-5 | HealthAssure