LOINCActiveObservation

LOINC Code 80331-2: Date and time of last void

80331-2 is a LOINC code used to identify Date and time of last void 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 and time of last void. It is commonly used with the system or sample type Genitourinary system.

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 and time of last void. It is commonly used with the system or sample type Genitourinary system.

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 and time of last void
  • Date and time; Date+time; Date+time last void; GU; H+P; H+P.PX; P prime; Past; Point in time; QNT; Quan; Quant; Quantitative; Random; 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 and time of last voidDate+time last void GUH&P.PXTmStpPtGenitourinary systemQn

Frequently asked questions

Code details

Code80331-2
SystemLOINC
Display nameDate and time of last void
Short nameDate+time last void GU
ComponentDate and time of last void
PropertyTmStp
TimingPt
System (specimen)Genitourinary system
ScaleQn
ClassH&P.PX
Example unitsclock time
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.56

Part names

Date and time of last voidTmStpPtGenitourinary systemQnTime 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 80331-2 | HealthAssure