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.

LOINCActive

LOINC Code 55271-1: Streptococcus pneumoniae conjugated immunization status

Name: LOINC Code 55271-1: Streptococcus pneumoniae conjugated immunization status
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:37.143Z

55271-1 is a LOINC code used to identify Streptococcus pneumoniae conjugated immunization status 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 Streptococcus pneumoniae conjugated immunization status. It is commonly used with the system or sample type ^Patient.

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 Streptococcus pneumoniae conjugated immunization status. It is commonly used with the system or sample type ^Patient.

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

What it does not mean

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

Key facts

Streptococcus pneumoniae conjugated immunization status
H+P; H+P.HX; History; Immunization status; Nominal; P prime; Pneu; pneum; Pneumo; Pneumococ; Pneumococcal; Pneumococcal pneumonia; Pneumococcus; Pneumon; Pneumonia; Point in time; Prevnar; Random; S pneum conjugated immunization status; S pneumo; S pneumoniae; Spn; Strep; Strept; Vaccination; Vaccinations; Vaccine

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

Streptococcus pneumoniae conjugated immunization statusS pneum conjugated immunization statusH&P.HXHxPt^PatientNom

Frequently asked questions

Code details

Code55271-1

SystemLOINC

Display nameStreptococcus pneumoniae conjugated immunization status

Short nameS pneum conjugated immunization status

ComponentStreptococcus pneumoniae conjugated immunization status

PropertyHx

TimingPt

System (specimen)^Patient

ScaleNom

ClassH&P.HX

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.27

Last changed2.27

Part names

Streptococcus pneumoniae conjugated immunization statusHxPt^PatientNomHistoryPoint 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.