LOINCActiveObservation

LOINC Code 11869-5: Gestational age estimation formula Narrative [Equation] Equation

11869-5 is a LOINC code used to identify Gestational age estimation formula Narrative [Equation] Equation 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 Equation. It is commonly used with the system or sample type Gestational age estimation formula.

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 Equation. It is commonly used with the system or sample type Gestational age estimation formula.

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

  • Gestational age estimation formula Narrative [Equation] Equation
  • Equation
  • Text formula for calculating gestational age by a special method
  • Eq'n; Equation; GA est formula; Gest; Gestation; Gyn; Gynecology; Narrative; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; Prenatal; 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

Gestational age estimation formula Narrative [Equation] EquationGA est formula Eq'nEquationOB.USEquPtGestational age estimation formula

Frequently asked questions

Code details

Code11869-5
SystemLOINC
Display nameGestational age estimation formula Narrative [Equation] Equation
DescriptionEquation
Short nameGA est formula Eq'n
ComponentEquation
PropertyEqu
TimingPt
System (specimen)Gestational age estimation formula
ScaleNar
ClassOB.US
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.40

Part names

EquationEquPtGestational age estimation formulaNarPoint 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 11869-5 | HealthAssure