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 98449-2: Left eye Horizontal prism - in intermediate by Phoropter

Name: LOINC Code 98449-2: Left eye Horizontal prism - in intermediate by Phoropter
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:31.430Z

98449-2 is a LOINC code used to identify Left eye Horizontal prism - in intermediate by Phoropter 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 Horizontal prism.in intermediate. 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 Horizontal prism.in intermediate. 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
Order vs observation: Observation
Method: Phoropter

What it does not mean

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

Key facts

Left eye Horizontal prism - in intermediate by Phoropter
Horizontal prism.in intermediate
by Phoropter; EYE.REFRACTION; Eyeball; H prism-in; H prism-in inter; Inverse Length; L; L eye; LT; Occular; Oculis; Ophthalmologic; Optic globe; Point in time; QNT; Quan; Quant; Quantitative; Random; 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

Left eye Horizontal prism - in intermediate by PhoropterL eye H prism-in inter by PhoropterHorizontal prism.in intermediateEYE.REFRACTIONInvLenPtEye.left

Frequently asked questions

Code details

Code98449-2

SystemLOINC

Display nameLeft eye Horizontal prism - in intermediate by Phoropter

DescriptionHorizontal prism.in intermediate

Short nameL eye H prism-in inter by Phoropter

ComponentHorizontal prism.in intermediate

PropertyInvLen

TimingPt

System (specimen)Eye.left

ScaleQn

MethodPhoropter

ClassEYE.REFRACTION

Example unitsprism diopter

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Part names

Horizontal prism.in intermediateInvLenPtEye.leftQnPhoropterHorizontal prism - in intermediateInverse LengthPoint 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.