LOINCActiveObservation

LOINC Code 53826-4: History of Trisomy 21 Qualitative

53826-4 is a LOINC code used to identify History of Trisomy 21 Qualitative 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 Trisomy 21. 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 Trisomy 21. 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

What it does not mean

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

Key facts

  • History of Trisomy 21 Qualitative
  • Trisomy 21
  • Down syndrome; Gyn; Gynecology; H+P; H+P.HX; History; OB; ObGyn; Obstetrics; Ordinal; P prime; Point in time; QL; Qual; Qualitative; Random; Screen; Ts

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

History of Trisomy 21 QualitativeHx of Trisomy 21 QlTrisomy 21H&P.HXHxPt^Patient

Frequently asked questions

Code details

Code53826-4
SystemLOINC
Display nameHistory of Trisomy 21 Qualitative
DescriptionTrisomy 21
Short nameHx of Trisomy 21 Ql
ComponentTrisomy 21
PropertyHx
TimingPt
System (specimen)^Patient
ScaleOrd
ClassH&P.HX
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.26
Last changed2.73

Part names

Trisomy 21HxPt^PatientOrdHistoryPoint 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.