LOINCActiveObservation

LOINC Code 49053-2: History of Neural tube defect Narrative

49053-2 is a LOINC code used to identify History of Neural tube defect Narrative 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 Neural tube defect. 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 Neural tube defect. 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 Neural tube defect Narrative
  • Neural tube defect
  • Anencephaly; Gyn; Gynecology; H+P; H+P.HX; History; Narrative; Neural tube def; Neural tube defct; NTD; OB; ObGyn; Obstetrics; ONTD; Open spina bifida; OSB; P prime; Point in time; Random; Report

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 Neural tube defect NarrativeHx of NTD NarrNeural tube defectH&P.HXHxPt^Patient

Frequently asked questions

Code details

Code49053-2
SystemLOINC
Display nameHistory of Neural tube defect Narrative
DescriptionNeural tube defect
Short nameHx of NTD Narr
ComponentNeural tube defect
PropertyHx
TimingPt
System (specimen)^Patient
ScaleNar
ClassH&P.HX
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.73

Part names

Neural tube defectHxPt^PatientNarHistoryPoint 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 49053-2 | HealthAssure