LOINCActive

LOINC Code 54123-5: Sex of Family member

54123-5 is a LOINC code used to identify Sex of Family member 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 Sex. It is commonly used with the system or sample type ^Family member.

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 Sex. It is commonly used with the system or sample type ^Family member.

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

What it does not mean

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

Key facts

Sex of Family member
Sex
Sex of a family member, including sibling, parent, child, or other family member. To specify the family member relation, use Relationship to patient [LOINC54136-7].
ADMIN; ADMIN.DEMOG; Fam Mem; Gender; Nominal; Point in time; Random; Typ

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

Sex of Family memberSex of Fam MemSexADMIN.DEMOGTypePt^Family member

Frequently asked questions

Code details

Code54123-5
SystemLOINC
Display nameSex of Family member
DescriptionSex
Short nameSex of Fam Mem
ComponentSex
PropertyType
TimingPt
System (specimen)^Family member
ScaleNom
ClassADMIN.DEMOG
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.26
Last changed2.66

Part names

SexTypePt^Family memberNomPoint 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.

LOINC Code 54123-5 | HealthAssure