LOINCActiveObservation

LOINC Code 56155-5: Date referral lab test results received

56155-5 is a LOINC code used to identify Date referral lab test results received 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 referral lab test results received. It is commonly used with the system or sample type Referral lab test.

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 referral lab test results received. It is commonly used with the system or sample type Referral lab test.

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 referral lab test results received in unspecified time Referral lab test
  • Date referral lab test results received
  • Date and/or time the referral lab test results were received by the requester, such as the ordering laboratory.
  • ?Tm; Date and time; Date Ref lab test results received; MISC; QNT; Quan; Quant; Quantitative; Ref Lab Test; Ref Lab Test Results; 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 referral lab test results receivedDate referral lab test results received in unspecified time Referral lab testDate ref lab test receivedMISCTmStpXXXReferral lab test

Frequently asked questions

Code details

Code56155-5
SystemLOINC
Display nameDate referral lab test results received
Short nameDate ref lab test received
ComponentDate referral lab test results received
PropertyTmStp
TimingXXX
System (specimen)Referral lab test
ScaleQn
ClassMISC
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.73

Consumer names

Date referral lab test results received

Part names

Date referral lab test results receivedTmStpXXXReferral lab testQnTime Stamp (Date and Time)Unspecified

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 56155-5 | HealthAssure