LOINC

LOINC Code 66414-4: More specific place of exposure [PhenX]

66414-4 is a LOINC code used to identify More specific place of exposure [PhenX] 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 More specific place of exposure. 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 More specific place of exposure. 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: TRIAL
  • Method: PhenX

What it does not mean

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

Key facts

  • More specific place of exposure [PhenX]
  • More specific place of exposure
  • Exp; Finding; Findings; Nominal; Point in time; Random; Spec; Specific place exposure

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

More specific place of exposure [PhenX]Specific place exposure PhenXMore specific place of exposurePHENXFindPt^Patient

Frequently asked questions

Code details

Code66414-4
SystemLOINC
Display nameMore specific place of exposure [PhenX]
DescriptionMore specific place of exposure
Short nameSpecific place exposure PhenX
ComponentMore specific place of exposure
PropertyFind
TimingPt
System (specimen)^Patient
ScaleNom
MethodPhenX
ClassPHENX
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.38
Last changed2.65

Part names

More specific place of exposureFindPt^PatientNomPhenXFindingPoint 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 66414-4 | HealthAssure