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.

LOINC

LOINC Code 58340-1: Acute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72 hours of the hospitalization or in-hospital event

Name: LOINC Code 58340-1: Acute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72 hours of the hospitalization or in-hospital event
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:39.274Z

58340-1 is a LOINC code used to identify Acute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72 hours of the hospitalization or in-hospital event 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 Acute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72H of the hospitalization or in-hospital event. 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 Acute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72H of the hospitalization or in-hospital event. 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: TRIAL

What it does not mean

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

Key facts

Acute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72 hours of the hospitalization or in-hospital event
Acute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72H of the hospitalization or in-hospital event
Acute episode within 72h of hosp; Finding; Findings; Hosp; Hospitalization hx; L; LT; Ordinal; PhenX; Point in time; QL; Qual; Qualitative; Random; Screen; Upper extremity

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

Acute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72 hours of the hospitalization or in-hospital eventAcute episode within 72h of hospAcute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72H of the hospitalization or in-hospital eventPHENXFindPt^Patient

Frequently asked questions

Code details

Code58340-1

SystemLOINC

Display nameAcute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72 hours of the hospitalization or in-hospital event

DescriptionAcute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72H of the hospitalization or in-hospital event

Short nameAcute episode within 72h of hosp

ComponentAcute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72H of the hospitalization or in-hospital event

PropertyFind

TimingPt

System (specimen)^Patient

ScaleOrd

ClassPHENX

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.30

Last changed2.65

Part names

Acute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72H of the hospitalization or in-hospital eventFindPt^PatientOrdAcute episode of pain, discomfort or tightness in the chest, left arm or jaw within 72 hours of the hospitalization or in-hospital eventFindingPoint 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.