LOINCActiveBoth

LOINC Code 49255-3: Calculus analysis Infrared spectroscopy Nar [Interp]

49255-3 is a LOINC code used to identify Calculus analysis Infrared spectroscopy Nar [Interp] 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 Calculus analysis. It is commonly used with the system or sample type Calculus.

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 Calculus analysis. It is commonly used with the system or sample type Calculus.

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: Both
  • Method: Infrared spectroscopy

What it does not mean

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

Key facts

  • Calculus analysis [Interpretation] in Stone Narrative by Infrared spectroscopy
  • Calculus analysis
  • Calc; Calculi; Chemistry; Gastro; Gastroenterology; GI; Impression; Impression/interpretation of study; Impressions; Infared spectoscopy; Interp; Interpretation; IR; Kidney; Narrative; Nephrology; Point in time; Random; Renal; Report; Stn; Stone; Stone Analysis; Stones; UniversalLabOrders

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

Calculus analysis Infrared spectroscopy Nar [Interp]Calculus analysis [Interpretation] in Stone Narrative by Infrared spectroscopyStone Analysis IR-ImpCalculus analysisCHEMInterpretation of Calculus analysis test result, StoneImp

Frequently asked questions

Code details

Code49255-3
SystemLOINC
Display nameCalculus analysis Infrared spectroscopy Nar [Interp]
DescriptionCalculus analysis
Short nameStone Analysis IR-Imp
ComponentCalculus analysis
PropertyImp
TimingPt
System (specimen)Calculus
ScaleNar
MethodInfrared spectroscopy
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.73

Consumer names

Interpretation of Calculus analysis test result, Stone

Part names

Calculus analysisImpPtCalculusNarInfrared spectroscopyImpression/interpretation of studyPoint in time (spot)Calculus (stone)

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 49255-3 | HealthAssure