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 12154-1: Fetal Left ventricular posterior wall Thickness.systolic US.M-mode+Measured

Name: LOINC Code 12154-1: Fetal Left ventricular posterior wall Thickness.systolic US.M-mode+Measured
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:22.974Z

12154-1 is a LOINC code used to identify Fetal Left ventricular posterior wall Thickness.systolic US.M-mode+Measured 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 Thickness.systolic. It is commonly used with the system or sample type Heart.ventricle.posterior wall.left^Fetus.

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 Thickness.systolic. It is commonly used with the system or sample type Heart.ventricle.posterior wall.left^Fetus.

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.M-mode+Measured

What it does not mean

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

Key facts

Fetal Left ventricular posterior wall Thickness.systolic US.M-mode+Measured
Thickness.systolic
Cardiac; Cardio; Cardiology; Echography; Fetal; Gyn; Gynecology; Heart Disease; Hrt; Hrt ventr; L; Length; LT; LV PW; LV.post wall; LVPW; LVPWs; MM; mmode; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Thick; ULS; Ultrasound; Ventricular

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

Fetal Left ventricular posterior wall Thickness.systolic US.M-mode+MeasuredFet LV.post wall Thick sys US.M-mode+MeaThickness.systolicOB.USLenPtHeart.ventricle.posterior wall.left^Fetus

Frequently asked questions

Code details

Code12154-1

SystemLOINC

Display nameFetal Left ventricular posterior wall Thickness.systolic US.M-mode+Measured

DescriptionThickness.systolic

Short nameFet LV.post wall Thick sys US.M-mode+Mea

ComponentThickness.systolic

PropertyLen

TimingPt

System (specimen)Heart.ventricle.posterior wall.left^Fetus

ScaleQn

MethodUS.M-mode+Measured

ClassOB.US

Example unitsmm

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.54

Part names

Thickness.systolicLenPtHeart.ventricle.posterior wall.left^FetusQnUS.M-mode+MeasuredLengthPoint 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.