LOINCActiveBoth

LOINC Code 91900-1: Parasite LM Ql (Bld)

91900-1 is a LOINC code used to identify Parasite LM Ql (Bld) 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 Parasite. It is commonly used with the system or sample type Bld.

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 Parasite. It is commonly used with the system or sample type Bld.

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: Microscopy.light

What it does not mean

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

Key facts

  • Parasite [Presence] in Blood by Light microscopy
  • Parasite
  • Blood; LM; Micro; Microbiology; Micros; Microscopic; Ordinal; Parasites; Point in time; PR; QL; Qual; Qualitative; Random; Screen; WB; Whole blood

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

Parasite LM Ql (Bld)Parasite [Presence] in Blood by Light microscopyParasite Bld Ql SmearParasiteMICROParasite, BloodPrThr

Frequently asked questions

Code details

Code91900-1
SystemLOINC
Display nameParasite LM Ql (Bld)
DescriptionParasite
Short nameParasite Bld Ql Smear
ComponentParasite
PropertyPrThr
TimingPt
System (specimen)Bld
ScaleOrd
MethodMicroscopy.light
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.66
Last changed2.66

Consumer names

Parasite, Blood

Part names

ParasitePrThrPtBldOrdMicroscopy.lightPresence or ThresholdPoint in time (spot)BloodLight 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.

LOINC Code 91900-1 | HealthAssure