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.

LOINCActiveObservation

LOINC Code 42465-5: Fetal Narrative [Interpretation] Study observation.general 2nd trimester, multiple fetuses US

Name: LOINC Code 42465-5: Fetal Narrative [Interpretation] Study observation.general 2nd trimester, multiple fetuses US
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:28.127Z

42465-5 is a LOINC code used to identify Fetal Narrative [Interpretation] Study observation.general 2nd trimester, multiple fetuses US 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 Study observation.general 2nd trimester. It is commonly used with the system or sample type ^Fetuses.

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 Study observation.general 2nd trimester. It is commonly used with the system or sample type ^Fetuses.

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
Method: US

What it does not mean

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

Key facts

Fetal Narrative [Interpretation] Study observation.general 2nd trimester, multiple fetuses US
Study observation.general 2nd trimester
Echography; Fetal; Gyn; Gynecology; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Narrative; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; Random; Report; Second; Sonogram; Sonograph; Sonography; Study 2nd trim; Study report; ULS; Ultrasound

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

Fetal Narrative [Interpretation] Study observation.general 2nd trimester, multiple fetuses USUS Fetuses Study 2nd trim [Imp]Study observation.general 2nd trimesterOB.USImpPt^Fetuses

Frequently asked questions

Code details

Code42465-5

SystemLOINC

Display nameFetal Narrative [Interpretation] Study observation.general 2nd trimester, multiple fetuses US

DescriptionStudy observation.general 2nd trimester

Short nameUS Fetuses Study 2nd trim [Imp]

ComponentStudy observation.general 2nd trimester

PropertyImp

TimingPt

System (specimen)^Fetuses

ScaleNar

MethodUS

ClassOB.US

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.16

Last changed2.50

Part names

Study observation.general 2nd trimesterImpPt^FetusesNarUSImpression/interpretation of studyPoint in time (spot)Ultrasound

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.