LOINCActiveObservation

LOINC Code 11839-8: Liver Longitudinal diameter US

11839-8 is a LOINC code used to identify Liver Longitudinal diameter US 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 Diameter.long. It is commonly used with the system or sample type Liver.

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 Diameter.long. It is commonly used with the system or sample type Liver.

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.measured

What it does not mean

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

Key facts

  • Liver Longitudinal diameter US
  • Diameter.long
  • Longest dimension of the liver between the right hemi-diaphragm and the liver edge measured in a plane parallel to and to the right of the fetal aorta
  • DIA; Diam; Echography; Gyn; Gynecology; Hepar; Hepatic; Length; Long diameter; Longitudinal diameter; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; US+Meas

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

Liver Longitudinal diameter USLiver Long diameter US.measDiameter.longOB.USLenPtLiver

Frequently asked questions

Code details

Code11839-8
SystemLOINC
Display nameLiver Longitudinal diameter US
DescriptionDiameter.long
Short nameLiver Long diameter US.meas
ComponentDiameter.long
PropertyLen
TimingPt
System (specimen)Liver
ScaleQn
MethodUS.measured
ClassOB.US
Example unitscm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.54

Part names

Diameter.longLenPtLiverQnUS.measuredLengthPoint in time (spot)Ultrasound.measured

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 11839-8 | HealthAssure