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 5783-6: Unidentified crystals LM Ql (Urine sed)

Name: LOINC Code 5783-6: Unidentified crystals LM Ql (Urine sed)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

5783-6 is a LOINC code used to identify Unidentified crystals LM Ql (Urine sed) 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 Crystals.unidentified. It is commonly used with the system or sample type Urine sed.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Crystals.unidentified. It is commonly used with the system or sample type Urine sed.

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: Microscopy.light

What it does not mean

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

Key facts

Unidentified crystals [Presence] in Urine sediment by Light microscopy
Crystals.unidentified
Crys; Cryst; Crystal; Kidney; LM; Micro; Micros; Microscopic; Nephrology; NOS AB; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Renal; Screen; UA; Unident Crys; UR; URINALYSIS; Urine sediment; Urn; UrnS

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Unidentified crystals LM Ql (Urine sed) (5783-6)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Unidentified crystals LM Ql (Urine sed)Unidentified crystals [Presence] in Urine sediment by Light microscopyUnident Crys UrnS Ql MicroCrystals.unidentifiedUAUrine sediment Unidentified crystals Light Microscopy testPrThr

Frequently asked questions

Code details

Code5783-6

SystemLOINC

Display nameUnidentified crystals LM Ql (Urine sed)

DescriptionCrystals.unidentified

Short nameUnident Crys UrnS Ql Micro

ComponentCrystals.unidentified

PropertyPrThr

TimingPt

System (specimen)Urine sed

ScaleOrd

MethodMicroscopy.light

ClassUA

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.73

Consumer names

Urine sediment Unidentified crystals Light Microscopy test

Part names

Crystals.unidentifiedPrThrPtUrine sedOrdMicroscopy.lightUnidentified crystalsPresence or ThresholdPoint in time (spot)Urine sedimentLight microscopy

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.