LOINC

LOINC Code 66674-3: Scarring chronic alopecia [PhenX]

66674-3 is a LOINC code used to identify Scarring chronic alopecia [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 Scarring chronic alopecia. 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 Scarring chronic alopecia. 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

  • Scarring chronic alopecia [PhenX]
  • Scarring chronic alopecia
  • History; Ordinal; Point in time; QL; Qual; Qualitative; Random; Screen

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

Scarring chronic alopecia [PhenX]Scarring chronic alopecia PhenXScarring chronic alopeciaPHENXHxPt^Patient

Frequently asked questions

Code details

Code66674-3
SystemLOINC
Display nameScarring chronic alopecia [PhenX]
DescriptionScarring chronic alopecia
Short nameScarring chronic alopecia PhenX
ComponentScarring chronic alopecia
PropertyHx
TimingPt
System (specimen)^Patient
ScaleOrd
MethodPhenX
ClassPHENX
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Scarring chronic alopeciaHxPt^PatientOrdPhenXHistoryPoint 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 66674-3 | HealthAssure