LOINCActive

LOINC Code 66068-8: Cornea thickness Left eye

66068-8 is a LOINC code used to identify Cornea thickness Left eye 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 Cornea thickness. It is commonly used with the system or sample type Eye.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 Cornea thickness. It is commonly used with the system or sample type Eye.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

What it does not mean

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

Key facts

  • Cornea thickness Left eye
  • Cornea thickness
  • Corneal; Eyeball; L; L eye; Length; LT; Occular; Oculis; Ophthalmologic; Optic globe; PhenX; Point in time; QNT; Quan; Quant; Quantitative; Random; Thick; Vision; Visual

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

Cornea thickness Left eyeCornea thickness L eyeCornea thicknessPHENXLenPtEye.left

Frequently asked questions

Code details

Code66068-8
SystemLOINC
Display nameCornea thickness Left eye
DescriptionCornea thickness
Short nameCornea thickness L eye
ComponentCornea thickness
PropertyLen
TimingPt
System (specimen)Eye.left
ScaleQn
ClassPHENX
Example unitsmm
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.72

Part names

Cornea thicknessLenPtEye.leftQnLengthPoint in time (spot)Left eye

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 66068-8 | HealthAssure