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 45259-9: Percent HIV ART actual prescription fills number/Ideal prescription fills number

Name: LOINC Code 45259-9: Percent HIV ART actual prescription fills number/Ideal prescription fills number
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:30.176Z

45259-9 is a LOINC code used to identify Percent HIV ART actual prescription fills number/Ideal prescription fills number 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 HIV ART actual prescription fills number/Ideal prescription fills number. 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 HIV ART actual prescription fills number/Ideal prescription fills number. 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: Pharmacy records

What it does not mean

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

Key facts

Percent HIV ART actual prescription fills number/Ideal prescription fills number
HIV ART actual prescription fills number/Ideal prescription fills number
# HIV ART prescription fills; # ideal prescription fills; AIDS; Human immunodeficiency virus; ID; Infectious Disease; InfectiousDisease; No; Num; Number fraction; Percent; Pharmacist; Point in time; QNT; Quan; Quant; Quantitative; Random; Rx

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

Percent HIV ART actual prescription fills number/Ideal prescription fills number% HIV ART Rx fills/IdealHIV ART actual prescription fills number/Ideal prescription fills numberARTNFrPt^Patient

Frequently asked questions

Code details

Code45259-9

SystemLOINC

Display namePercent HIV ART actual prescription fills number/Ideal prescription fills number

DescriptionHIV ART actual prescription fills number/Ideal prescription fills number

Short name% HIV ART Rx fills/Ideal

ComponentHIV ART actual prescription fills number/Ideal prescription fills number

PropertyNFr

TimingPt

System (specimen)^Patient

ScaleQn

MethodPharmacy records

ClassART

Example units%

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.67

Part names

HIV ART actual prescription fills number/Ideal prescription fills numberNFrPt^PatientQnPharmacy recordsNumber FractionPoint 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.