LOINCActiveObservation

LOINC Code 99501-9: Sex parameter for clinical use

99501-9 is a LOINC code used to identify Sex parameter for clinical use 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 parameter for clinical use. 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 Sex parameter for clinical use. 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

Sex parameter for clinical use
Sex Parameter for Clinical Use (SPCU) is a parameter that provides guidance on how a recipient should apply settings or reference ranges that are derived from observable information such as an organ inventory, recent hormone lab tests, genetic testing, menstrual status, obstetric history, etc.. This property is intended for use in clinical decision making, and indicates that treatment or diagnostic tests should consider best practices associated with the relevant reference population. When exchanging these concepts, refer to the guidance in the Gender Harmony Implementation Guide [https//hl7.org/xprod/ig/uv/gender-harmony/].
ADMIN; ADMIN.PATIENT; ADMIN.PT.DEMOG; Gender; Nominal; Point in time; Random; SFCU; SPCU; 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 parameter for clinical useSPCUADMIN.PATIENT.DEMOGTypePt^PatientNom

Frequently asked questions

Code details

Code99501-9
SystemLOINC
Display nameSex parameter for clinical use
Short nameSPCU
ComponentSex parameter for clinical use
PropertyType
TimingPt
System (specimen)^Patient
ScaleNom
ClassADMIN.PATIENT.DEMOG
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.72
Last changed2.77

Part names

Sex parameter for clinical useTypePt^PatientNomPoint 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 99501-9 | HealthAssure