LOINCObservation

LOINC Code 86948-7: Date treatment or therapy started

86948-7 is a LOINC code used to identify Date treatment or therapy started 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 Date treatment or therapy started. 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 Date treatment or therapy started. 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: DEPRECATED
  • Order vs observation: Observation

What it does not mean

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

Key facts

  • Deprecated Date treatment or therapy started
  • Date treatment or therapy started
  • H+P; H+P.HX; P prime; Point in time; QNT; Quan; Quant; Quantitative; Random; 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

Date treatment or therapy startedDeprecated Date treatment or therapy startedH&P.HXDatePt^PatientQn

Frequently asked questions

Code details

Code86948-7
SystemLOINC
Display nameDate treatment or therapy started
Short nameDeprecated Date treatment or therapy started
ComponentDate treatment or therapy started
PropertyDate
TimingPt
System (specimen)^Patient
ScaleQn
ClassH&P.HX
Example unitsMMDDYY
StatusDEPRECATED
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.63
Last changed2.66

Part names

Date treatment or therapy startedDatePt^PatientQnPoint 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.