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 111555-9: Microscopic observation Acid fast stain.Ziehl-Neelsen Ql (Bronchoalveolar aspirate)

Name: LOINC Code 111555-9: Microscopic observation Acid fast stain.Ziehl-Neelsen Ql (Bronchoalveolar aspirate)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:21.941Z

111555-9 is a LOINC code used to identify Microscopic observation Acid fast stain.Ziehl-Neelsen Ql (Bronchoalveolar aspirate) 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 Observation. It is commonly used with the system or sample type Bronchoalveolar aspirate.

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 Observation. It is commonly used with the system or sample type Bronchoalveolar aspirate.

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: Acid fast stain.Ziehl-Neelsen

What it does not mean

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

Key facts

Microscopic observation [Presence] in Bronchoalveolar aspirate by Acid fast stain.Ziehl-Neelsen
Observation
Acd; Acid fast Stn; Acids; AFB stain; BAS; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; St; Stains; Stn; ZN Stn

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

Microscopic observation Acid fast stain.Ziehl-Neelsen Ql (Bronchoalveolar aspirate)Microscopic observation [Presence] in Bronchoalveolar aspirate by Acid fast stain.Ziehl-NeelsenZN Stn BAS QlObservationMICROMicroscopic observation, Bronchoalveolar aspiratePrThr

Frequently asked questions

Code details

Code111555-9

SystemLOINC

Display nameMicroscopic observation Acid fast stain.Ziehl-Neelsen Ql (Bronchoalveolar aspirate)

DescriptionObservation

Short nameZN Stn BAS Ql

ComponentObservation

PropertyPrThr

TimingPt

System (specimen)Bronchoalveolar aspirate

ScaleOrd

MethodAcid fast stain.Ziehl-Neelsen

ClassMICRO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.82

Last changed2.82

Consumer names

Microscopic observation, Bronchoalveolar aspirate

Part names

ObservationPrThrPtBronchoalveolar aspirateOrdAcid fast stain.Ziehl-NeelsenPresence or ThresholdPoint in time (spot)

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.