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 99935-9: Average frequency of primary pain in past 4 weeks

Name: LOINC Code 99935-9: Average frequency of primary pain in past 4 weeks
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:34.291Z

99935-9 is a LOINC code used to identify Average frequency of primary pain in past 4 weeks 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 Average frequency of primary pain in past 4W. 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 Average frequency of primary pain in past 4W. 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
Order vs observation: Observation

What it does not mean

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

Key facts

Average frequency of primary pain in past 4 weeks
Average frequency of primary pain in past 4W
4 weeks; Avg freq primary pain past 4W; Finding; Findings; H+P; H+P.HX; Last; Ordinal; P prime; QL; Qual; Qualitative; Screen

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

Average frequency of primary pain in past 4 weeksAvg freq primary pain past 4WAverage frequency of primary pain in past 4WH&P.HXFind4W^Patient

Frequently asked questions

Code details

Code99935-9

SystemLOINC

Display nameAverage frequency of primary pain in past 4 weeks

DescriptionAverage frequency of primary pain in past 4W

Short nameAvg freq primary pain past 4W

ComponentAverage frequency of primary pain in past 4W

PropertyFind

Timing4W

System (specimen)^Patient

ScaleOrd

ClassH&P.HX

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Part names

Average frequency of primary pain in past 4WFind4W^PatientOrdAverage frequency of primary pain in past 4 weeksFinding4 weeks

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.