LOINCActive

LOINC Code 66555-4: Skin type [Fitzpatrick Classification Scale]

66555-4 is a LOINC code used to identify Skin type [Fitzpatrick Classification Scale] 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 Skin type. 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 Skin type. 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
  • Method: Fitzpatrick Classification Scale

What it does not mean

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

Key facts

Skin type [Fitzpatrick Classification Scale]
Skin type
The Fitzpatrick skin type classification scale is a recognized standard in dermatology used to estimate the response of different types of skin to ultraviolet (UV) light. Fitzpatrick skin types range from Type I to VI where patient's with Type I always burn and never tan (pale white; blond or red hair; blue eyes; freckles) and patient's with Type VI never burn (deeply pigmented dark brown to darkest brown).[PMID3377516]
Integument; Nominal; PhenX; Point in time; Random; 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

Skin type [Fitzpatrick Classification Scale]Skin type FitzpatrickSkin typePHENXTypePt^Patient

Frequently asked questions

Code details

Code66555-4
SystemLOINC
Display nameSkin type [Fitzpatrick Classification Scale]
DescriptionSkin type
Short nameSkin type Fitzpatrick
ComponentSkin type
PropertyType
TimingPt
System (specimen)^Patient
ScaleNom
MethodFitzpatrick Classification Scale
ClassPHENX
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Skin typeTypePt^PatientNomFitzpatrick Classification ScalePoint 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 66555-4 | HealthAssure