LOINCActiveObservation

LOINC Code 94546-9: Relationship to individual with confirmed or suspected illness

94546-9 is a LOINC code used to identify Relationship to individual with confirmed or suspected illness 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 Relationship to individual with confirmed or suspected illness. 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 Relationship to individual with confirmed or suspected illness. 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

  • Relationship to individual with confirmed or suspected illness
  • This term is used to report the patient's relationship to a suspected or confirmed case. For example, if the patient's mother is a confirmed case, the patient's relationship to her would be "child". And if a patient's child is a confirmed case, the patient's relationship to the child would be "mother".
  • H+P; H+P.HX; Nominal; P prime; Point in time; Random; Rel to ind w conf/susp ill; 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

Relationship to individual with confirmed or suspected illnessRel to ind w conf/susp illH&P.HXTypePt^PatientNom

Frequently asked questions

Code details

Code94546-9
SystemLOINC
Display nameRelationship to individual with confirmed or suspected illness
Short nameRel to ind w conf/susp ill
ComponentRelationship to individual with confirmed or suspected illness
PropertyType
TimingPt
System (specimen)^Patient
ScaleNom
ClassH&P.HX
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.68
Last changed2.68

Part names

Relationship to individual with confirmed or suspected illnessTypePt^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.