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 99536-5: Measured (Foot) [Length]

Name: LOINC Code 99536-5: Measured (Foot) [Length]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:33.065Z

99536-5 is a LOINC code used to identify Measured (Foot) [Length] 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 Length.heel toe. It is commonly used with the system or sample type Foot.

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 Length.heel toe. It is commonly used with the system or sample type Foot.

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
Method: Measured

What it does not mean

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

Key facts

Heel toe length of Foot Measured
Length.heel toe
Ft; H+P; H+P.PX; Heel toe length; Len; Length; Lower extremity; P prime; 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

Measured (Foot) [Length]Heel toe length of Foot MeasuredHeel toe length Ft MeasuredLength.heel toeH&P.PXHeel toe lengthLen

Frequently asked questions

Code details

Code99536-5

SystemLOINC

Display nameMeasured (Foot) [Length]

DescriptionLength.heel toe

Short nameHeel toe length Ft Measured

ComponentLength.heel toe

PropertyLen

TimingPt

System (specimen)Foot

ScaleQn

MethodMeasured

ClassH&P.PX

Example unitscm

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.72

Last changed2.72

Consumer names

Heel toe length

Part names

Length.heel toeLenPtFootQnMeasuredHeel toe lengthLengthPoint 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.