LOINCActiveObservation

LOINC Code 80909-5: Father's last name

80909-5 is a LOINC code used to identify Father's last name 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 Father's last name. It is commonly used with the system or sample type ^Father.

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 Father's last name. It is commonly used with the system or sample type ^Father.

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

Father's last name
The surname of the individual's father. This term was created for, but not limited in use to, the HL7 Version 2.6 Implementation GuideVital Records Death Reporting, Release 1.
Father last name; Nominal; Past; Person name; Point in time; Random; S prime; Survey; SURVEY.CDC

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

Father's last nameSURVEY.CDCPnPt^FatherNomPerson name

Frequently asked questions

Code details

Code80909-5
SystemLOINC
Display nameFather's last name
ComponentFather's last name
PropertyPn
TimingPt
System (specimen)^Father
ScaleNom
ClassSURVEY.CDC
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.56

Part names

Father's last namePnPt^FatherNomPerson namePoint 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 80909-5 | HealthAssure