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 83053-9: Cells.programmed cell death ligand 1/Viable tumor cells Immune stain (Tiss)

Name: LOINC Code 83053-9: Cells.programmed cell death ligand 1/Viable tumor cells Immune stain (Tiss)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:10.306Z

83053-9 is a LOINC code used to identify Cells.programmed cell death ligand 1/Viable tumor cells Immune stain (Tiss) 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 Cells.programmed cell death ligand 1/Viable tumor cells. It is commonly used with the system or sample type Tiss.

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 Cells.programmed cell death ligand 1/Viable tumor cells. It is commonly used with the system or sample type Tiss.

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: Immune stain

What it does not mean

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

Key facts

Cells.programmed cell death ligand 1/Viable tumor cells in Tissue by Immune stain
Cells.programmed cell death ligand 1/Viable tumor cells
B7 homolog 1; B7-H1; CD274; Cell; Cells.PD-L1; Cellularity; Cluster of differentiation 274; i; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; Number fraction; PATHOLOGY; PDL1; PD-L1; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; St; Stains; Stn; TC; Tissue; Tissue, unspecified; Viab tum

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

Cells.programmed cell death ligand 1/Viable tumor cells Immune stain (Tiss)Cells.programmed cell death ligand 1/Viable tumor cells in Tissue by Immune stainCells.PD-L1/Viab tum NFr Tiss ImStnCells.programmed cell death ligand 1/Viable tumor cellsPATHCells.programmed cell death ligand 1/Viable tumor cells, TissueNFr

Frequently asked questions

Code details

Code83053-9

SystemLOINC

Display nameCells.programmed cell death ligand 1/Viable tumor cells Immune stain (Tiss)

DescriptionCells.programmed cell death ligand 1/Viable tumor cells

Short nameCells.PD-L1/Viab tum NFr Tiss ImStn

ComponentCells.programmed cell death ligand 1/Viable tumor cells

PropertyNFr

TimingPt

System (specimen)Tiss

ScaleQn

MethodImmune stain

ClassPATH

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.58

Last changed2.79

Consumer names

Cells.programmed cell death ligand 1/Viable tumor cells, Tissue

Part names

Cells.programmed cell death ligand 1/Viable tumor cellsNFrPtTissQnImmune stainNumber FractionPoint in time (spot)Tissue and Smears

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.