LOINCActiveObservation

LOINC Code 74027-4: Family pedigree identifier

74027-4 is a LOINC code used to identify Family pedigree identifier 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 Family pedigree identifier. 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 Family pedigree identifier. 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

  • Family pedigree identifier
  • The identifier for the patient's family history pedigree (family tree). Family pedigrees are diagrams which indicate relationships to family members and contain family health and medical history information. They are used to assess family diseases and identify patterns or indications which may be helpful in diagnosing or managing a patient's health.
  • Family tree; H+P; H+P.HX; Ident; Identifier; Nominal; P prime; Point in time; 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

Family pedigree identifierFamily pedigree IDH&P.HXIDPt^PatientNom

Frequently asked questions

Code details

Code74027-4
SystemLOINC
Display nameFamily pedigree identifier
Short nameFamily pedigree ID
ComponentFamily pedigree identifier
PropertyID
TimingPt
System (specimen)^Patient
ScaleNom
ClassH&P.HX
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.46
Last changed2.46

Part names

Family pedigree identifierIDPt^PatientNomIdentifierPoint 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.