What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 11781-2: Delivery date US composite estimate

Name: LOINC Code 11781-2: Delivery date US composite estimate
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:22.973Z

11781-2 is a LOINC code used to identify Delivery date US composite estimate 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 Delivery 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 Delivery 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
Order vs observation: Observation
Method: US.composite.estimated

What it does not mean

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

Key facts

Delivery date US composite estimate
Delivery date
Delivery date (EDD or EDC) based on composite gestational age estimates derived from all pertinent ultrasound measurements made during a single examination.
Date of confinement; Deliv date; Due date; Echography; EDC; EDD; Est; estimation; Gyn; Gynecology; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound

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

Delivery date US composite estimateDeliv date US.composite.estDelivery dateOB.USDatePt^Patient

Frequently asked questions

Code details

Code11781-2

SystemLOINC

Display nameDelivery date US composite estimate

DescriptionDelivery date

Short nameDeliv date US.composite.est

ComponentDelivery date

PropertyDate

TimingPt

System (specimen)^Patient

ScaleQn

MethodUS.composite.estimated

ClassOB.US

Example unitsMMDDYY

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.73

Part names

Delivery dateDatePt^PatientQnUS.composite.estimatedPoint in time (spot)Ultrasound.composite.estimated

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.