LOINCActive

LOINC Code 28950-4: Left contact lens prescription Producer text

28950-4 is a LOINC code used to identify Left contact lens prescription Producer text 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 Producer text. It is commonly used with the system or sample type Contact lens.prescription.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 Producer text. It is commonly used with the system or sample type Contact lens.prescription.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

  • Left contact lens prescription Producer text
  • Producer text
  • Cont lens; EYE; EYE.CONTACT_LENS; Identity or presence; L; L cont lens Rx; LT; Narrative; Ophthalmology; Ophtho; Ophthy; Point in time; Random; Report; Rx

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 contact lens prescription Producer textL cont lens Rx Producer textProducer textEYE.CONTACT_LENSPridPtContact lens.prescription.left

Frequently asked questions

Code details

Code28950-4
SystemLOINC
Display nameLeft contact lens prescription Producer text
DescriptionProducer text
Short nameL cont lens Rx Producer text
ComponentProducer text
PropertyPrid
TimingPt
System (specimen)Contact lens.prescription.left
ScaleNar
ClassEYE.CONTACT_LENS
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.68

Part names

Producer textPridPtContact lens.prescription.leftNarPresence or IdentityPoint in time (spot)Left contact lens prescription

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.