LOINCActiveObservation

LOINC Code 45351-4: Date of skin test (Skin)

45351-4 is a LOINC code used to identify Date of skin test (Skin) 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 Date of skin test. It is commonly used with the system or sample type Skin.

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 Date of skin test. It is commonly used with the system or sample type Skin.

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

  • Date of skin test
  • To document date skin test applied
  • Date and time; Dermatologic; Epidermis; Integument; Point in time; QNT; Quan; Quant; Quantitative; Random; SKIN TESTS; Skn; Time stamp; Timestamp

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

Date of skin test (Skin)Date of skin testCHALSKINDate of skin test, SkinTmStpPtSkin

Frequently asked questions

Code details

Code45351-4
SystemLOINC
Display nameDate of skin test (Skin)
DescriptionDate of skin test
Short nameDate Of Skin Test
ComponentDate of skin test
PropertyTmStp
TimingPt
System (specimen)Skin
ScaleQn
ClassCHALSKIN
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.73

Consumer names

Date of skin test, Skin

Part names

Date of skin testTmStpPtSkinQnTime Stamp (Date and Time)Point 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 45351-4 | HealthAssure