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 99899-7: Calcium oxalate dihydrate crystals Computer assisted (Urine sed) [#/Vol]

Name: LOINC Code 99899-7: Calcium oxalate dihydrate crystals Computer assisted (Urine sed) [#/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:34.291Z

99899-7 is a LOINC code used to identify Calcium oxalate dihydrate crystals Computer assisted (Urine sed) [#/Vol] 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 Calcium oxalate dihydrate crystals. It is commonly used with the system or sample type Urine sed.

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 Calcium oxalate dihydrate crystals. 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: Computer assisted

What it does not mean

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

Key facts

Calcium oxalate dihydrate crystals [#/volume] in Urine sediment by Computer assisted method
Calcium oxalate dihydrate crystals
#; ABS; absolute; absolutes; Artificial Intelligence; Automated detection; Ca; CaC2O4; CaC2O4.2H2O; Cal; CaOx; Cnt; COD Cry; Comp Assist; Count; Count/volume; Crys; Cryst; Crystal; CT; Ethanedioate; Ethanedioic acid; Number concentration; Number Concentration (count/vol); Oxal; Oxalic acid; Point in time; QNT; Quan; Quant; Quantitative; Random; UA; UR; URINALYSIS; Urine sediment; Urn; UrnS; Weddellite

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

Calcium oxalate dihydrate crystals Computer assisted (Urine sed) [#/Vol]Calcium oxalate dihydrate crystals [#/volume] in Urine sediment by Computer assisted methodCOD Cry # UrnS Comp AssistCalcium oxalate dihydrate crystalsUACalcium oxalate dihydrate crystals, Urine sedimentNCnc

Frequently asked questions

Code details

Code99899-7

SystemLOINC

Display nameCalcium oxalate dihydrate crystals Computer assisted (Urine sed) [#/Vol]

DescriptionCalcium oxalate dihydrate crystals

Short nameCOD Cry # UrnS Comp Assist

ComponentCalcium oxalate dihydrate crystals

PropertyNCnc

TimingPt

System (specimen)Urine sed

ScaleQn

MethodComputer assisted

ClassUA

Example unitsp/ul

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Consumer names

Calcium oxalate dihydrate crystals, Urine sediment

Part names

Calcium oxalate dihydrate crystalsNCncPtUrine sedQnComputer assistedNumber ConcentrationPoint in time (spot)Urine sedimentComputer assisted method

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.