What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCObservation

LOINC Code 80397-3: Number of weeks postpartum

Name: LOINC Code 80397-3: Number of weeks postpartum
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:03.792Z

80397-3 is a LOINC code used to identify Number of weeks postpartum 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 Number of W postpartum. 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 Number of W postpartum. 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
Order vs observation: Observation

What it does not mean

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

Key facts

Number of weeks postpartum
Number of W postpartum
Gyn; Gynecology; No; Num; Num of W postpartum; OB; OBGYN; Obstetrics; Point in time; Postpart; Postpartm; QNT; Quan; Quant; Quantitative; Random

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

Number of weeks postpartumNum of W postpartumNumber of W postpartumOBGYNTimePt^Patient

Frequently asked questions

Code details

Code80397-3

SystemLOINC

Display nameNumber of weeks postpartum

DescriptionNumber of W postpartum

Short nameNum of W postpartum

ComponentNumber of W postpartum

PropertyTime

TimingPt

System (specimen)^Patient

ScaleQn

ClassOBGYN

Example unitswk

StatusTRIAL

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.54

Part names

Number of W postpartumTimePt^PatientQnNumber of weeks postpartumTime (e.g. seconds)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.