LOINCActiveObservation

LOINC Code 11956-0: Fetal Head Lateral ventricular body width/Hemispheric width derived by US

11956-0 is a LOINC code used to identify Fetal Head Lateral ventricular body width/Hemispheric width derived by 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 Lateral ventricular body width/Hemispheric width. It is commonly used with the system or sample type Head^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 Lateral ventricular body width/Hemispheric width. It is commonly used with the system or sample type Head^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.derived

What it does not mean

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

Key facts

  • Fetal Head Lateral ventricular body width/Hemispheric width derived by US
  • Lateral ventricular body width/Hemispheric width
  • Derived ratio of these two measurements
  • bod; Bodies; Brain; Cranial; Cranium; der US; Echoencephalogram; Echoencephalography; Echography; Fetal; Gyn; Gynecology; HW; Intracranial; Lat; Length Ratio; LVW; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; Skull; 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

Fetal Head Lateral ventricular body width/Hemispheric width derived by USFet Head LVW/HW der USLateral ventricular body width/Hemispheric widthOB.USLenRtoPtHead^fetus

Frequently asked questions

Code details

Code11956-0
SystemLOINC
Display nameFetal Head Lateral ventricular body width/Hemispheric width derived by US
DescriptionLateral ventricular body width/Hemispheric width
Short nameFet Head LVW/HW der US
ComponentLateral ventricular body width/Hemispheric width
PropertyLenRto
TimingPt
System (specimen)Head^Fetus
ScaleQn
MethodUS.derived
ClassOB.US
Example unitsratio
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.48

Part names

Lateral ventricular body width/Hemispheric widthLenRtoPtHead^fetusQnUS.derivedLength RatioPoint in time (spot)Ultrasound.derived

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 11956-0 | HealthAssure