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 66216-3: Distance of overlap or distance between the tips of the middle fingers [PhenX]

Name: LOINC Code 66216-3: Distance of overlap or distance between the tips of the middle fingers [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:45.459Z

66216-3 is a LOINC code used to identify Distance of overlap or distance between the tips of the middle fingers [PhenX] 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 Distance of overlap or distance between the tips of the middle fingers. 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 Distance of overlap or distance between the tips of the middle fingers. 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
Method: PhenX

What it does not mean

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

Key facts

Distance of overlap or distance between the tips of the middle fingers [PhenX]
Distance of overlap or distance between the tips of the middle fingers
A minus score is given to represent a distance short of touching; a plus score represents the amount of an overlap.
Back scratch distance; Length; 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

Distance of overlap or distance between the tips of the middle fingers [PhenX]Back scratch distance PhenXDistance of overlap or distance between the tips of the middle fingersPHENXLenPt^Patient

Frequently asked questions

Code details

Code66216-3

SystemLOINC

Display nameDistance of overlap or distance between the tips of the middle fingers [PhenX]

DescriptionDistance of overlap or distance between the tips of the middle fingers

Short nameBack scratch distance PhenX

ComponentDistance of overlap or distance between the tips of the middle fingers

PropertyLen

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

Example unitscm

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.65

Part names

Distance of overlap or distance between the tips of the middle fingersLenPt^PatientQnPhenXLengthPoint 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.