LOINC

LOINC Code 63963-3: Date of end of pregnancy [PhenX]

63963-3 is a LOINC code used to identify Date of end of pregnancy [PhenX] 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 of end of pregnancy. 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 of end of pregnancy. 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: TRIAL
  • Method: PhenX

What it does not mean

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

Key facts

  • Date of end of pregnancy [PhenX]
  • Date of end of pregnancy
  • Gestation; Gestations; Gravida; Point in time; Pregnancies; QNT; Quan; Quant; Quantitative; Random

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 of end of pregnancy [PhenX]Date of end of pregnancy PhenXDate of end of pregnancyPHENXDatePt^Patient

Frequently asked questions

Code details

Code63963-3
SystemLOINC
Display nameDate of end of pregnancy [PhenX]
DescriptionDate of end of pregnancy
Short nameDate of end of pregnancy PhenX
ComponentDate of end of pregnancy
PropertyDate
TimingPt
System (specimen)^Patient
ScaleQn
MethodPhenX
ClassPHENX
Example unitsMMDDYY
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.65

Part names

Date of end of pregnancyDatePt^PatientQnPhenXPoint 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.