LOINCActiveObservation

LOINC Code 99527-4: Thickness (LV) [Length]

99527-4 is a LOINC code used to identify Thickness (LV) [Length] 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. It is commonly used with the system or sample type Heart.ventricle.left.

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. It is commonly used with the system or sample type Heart.ventricle.left.

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

  • Thickness [Length] of Left ventricle
  • Thickness
  • Cardiac; Hrt; Hrt ventr; L; Length; LT; LV; PATHOLOGY; Point in time; QNT; Quan; Quant; Quantitative; Random; Thick; 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

Thickness (LV) [Length]Thickness [Length] of Left ventricleThickness LVThicknessPATHThickness, Left ventricleLen

Frequently asked questions

Code details

Code99527-4
SystemLOINC
Display nameThickness (LV) [Length]
DescriptionThickness
Short nameThickness LV
ComponentThickness
PropertyLen
TimingPt
System (specimen)Heart.ventricle.left
ScaleQn
ClassPATH
Example unitscm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.72
Last changed2.72

Consumer names

Thickness, Left ventricle

Part names

ThicknessLenPtHeart.ventricle.leftQnLengthPoint in time (spot)Heart ventricle - left

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 99527-4 | HealthAssure