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LOINC Code 25147-0: Calcium carbonate crystals LM.HPF (Urine sed) [#/Area]

25147-0 is a LOINC code used to identify Calcium carbonate crystals LM.HPF (Urine sed) [#/Area] 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 carbonate crystals. 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 Calcium carbonate 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: Microscopy.light.HPF

What it does not mean

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

Key facts

  • Calcium carbonate crystals [#/area] in Urine sediment by Microscopy high power field
  • Calcium carbonate crystals
  • #/area; Apatite crystals; Ca; Ca Carbonate; Ca Carbonate Cry; CaCO3; Cal; Carb; Carbonic acid; Crys; Cryst; Crystal; Kidney; LM; Micro; Micros; Microscopic; Nephrology; Number areic; Point in time; QNT; Quan; Quant; Quantitative; Random; Renal; UA; 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.

Common synonyms

Calcium carbonate crystals LM.HPF (Urine sed) [#/Area]Calcium carbonate crystals [#/area] in Urine sediment by Microscopy high power fieldCa Carbonate Cry #/area UrnS HPFCalcium carbonate crystalsUACalcium carbonate crystals, Urine sedimentNaric

Frequently asked questions

Code details

Code25147-0
SystemLOINC
Display nameCalcium carbonate crystals LM.HPF (Urine sed) [#/Area]
DescriptionCalcium carbonate crystals
Short nameCa Carbonate Cry #/area UrnS HPF
ComponentCalcium carbonate crystals
PropertyNaric
TimingPt
System (specimen)Urine sed
ScaleQn
MethodMicroscopy.light.HPF
ClassUA
Example units/HPF
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.73

Consumer names

Calcium carbonate crystals, Urine sediment

Part names

Calcium carbonate crystalsNaricPtUrine sedQnMicroscopy.light.HPFNumber Areic (per area)Point in time (spot)Urine sedimentMicroscopy high power field

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.