LOINCActiveObservation

LOINC Code 79813-2: Right cornea Corneal curvature by Keratometry

79813-2 is a LOINC code used to identify Right cornea Corneal curvature by Keratometry 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 Corneal curvature. It is commonly used with the system or sample type Cornea.right.

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 Corneal curvature. It is commonly used with the system or sample type Cornea.right.

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: Keratometry

What it does not mean

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

Key facts

  • Right cornea Corneal curvature by Keratometry
  • Corneal curvature
  • This term was developed in collaboration with the National Institute of Health's National Eye Institute (NEI) as part of an effort to standardize the data elements collected by the National Ophthalmic Disease Genotyping and Phenotyping Network (eyeGENE).
  • by KM; Corneal; EYE; EYE.PX; EYE.PX.NEI; Inverse Length; Ophthalmology; Ophthalmometer; Ophtho; Ophthy; Point in time; QNT; Quan; Quant; Quantitative; R; R cornea; Random; RT

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

Right cornea Corneal curvature by KeratometryR cornea Corneal curvature by KMCorneal curvatureEYE.PX.NEIInvLenPtCornea.right

Frequently asked questions

Code details

Code79813-2
SystemLOINC
Display nameRight cornea Corneal curvature by Keratometry
DescriptionCorneal curvature
Short nameR cornea Corneal curvature by KM
ComponentCorneal curvature
PropertyInvLen
TimingPt
System (specimen)Cornea.right
ScaleQn
MethodKeratometry
ClassEYE.PX.NEI
Example unitsDiopter
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.68

Part names

Corneal curvatureInvLenPtCornea.rightQnKeratometryInverse LengthPoint in time (spot)Right cornea

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 79813-2 | HealthAssure