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 45248-2: Number of hospital days since last outpatient visit - Reported

Name: LOINC Code 45248-2: Number of hospital days since last outpatient visit - Reported
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:30.176Z

45248-2 is a LOINC code used to identify Number of hospital days since last outpatient visit - Reported 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 Number of hospital D since last outpatient visit. 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 Number of hospital D since last outpatient visit. 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
Method: Reported

What it does not mean

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

Key facts

Number of hospital days since last outpatient visit - Reported
Number of hospital D since last outpatient visit
# hospital days since last OP visit; Cnt; Count; Dextro; H+P; H+P.HX; Hosp; No; Num; Number; OP; P prime; Past; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Number of hospital days since last outpatient visit - Reported# hosp days since last OP visit ReportedNumber of hospital D since last outpatient visitH&P.HXNumPt^Patient

Frequently asked questions

Code details

Code45248-2

SystemLOINC

Display nameNumber of hospital days since last outpatient visit - Reported

DescriptionNumber of hospital D since last outpatient visit

Short name# hosp days since last OP visit Reported

ComponentNumber of hospital D since last outpatient visit

PropertyNum

TimingPt

System (specimen)^Patient

ScaleQn

MethodReported

ClassH&P.HX

Example units#

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.67

Part names

Number of hospital D since last outpatient visitNumPt^PatientQnReportedNumber of hospital days since last outpatient visitNumber (count)Point 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.