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 64763-6: How many of his or her sisters have, had, or were suspected of having this eye problem [#] [PhenX]

Name: LOINC Code 64763-6: How many of his or her sisters have, had, or were suspected of having this eye problem [#] [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:44.549Z

64763-6 is a LOINC code used to identify How many of his or her sisters have, had, or were suspected of having this eye problem [#] [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 How many of his or her sisters have, had, or were suspected of having this eye problem. 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 How many of his or her sisters have, had, or were suspected of having this eye problem. 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

How many of his or her sisters have, had, or were suspected of having this eye problem [#] [PhenX]
How many of his or her sisters have, had, or were suspected of having this eye problem
Cnt; Count; Eye problem sisters; Number; 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

How many of his or her sisters have, had, or were suspected of having this eye problem [#] [PhenX]Eye problem sisters PhenXHow many of his or her sisters have, had, or were suspected of having this eye problemPHENXNumPt^Patient

Frequently asked questions

Code details

Code64763-6

SystemLOINC

Display nameHow many of his or her sisters have, had, or were suspected of having this eye problem [#] [PhenX]

DescriptionHow many of his or her sisters have, had, or were suspected of having this eye problem

Short nameEye problem sisters PhenX

ComponentHow many of his or her sisters have, had, or were suspected of having this eye problem

PropertyNum

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

Example units#

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

How many of his or her sisters have, had, or were suspected of having this eye problemNumPt^PatientQnPhenXNumber (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.