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 33139-7: Fetal Body weight estimated from Biparietal diameter and Transverse thoracic diameter on US by Hansmann 1986 method

Name: LOINC Code 33139-7: Fetal Body weight estimated from Biparietal diameter and Transverse thoracic diameter on US by Hansmann 1986 method
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:20.067Z

33139-7 is a LOINC code used to identify Fetal Body weight estimated from Biparietal diameter and Transverse thoracic diameter on US by Hansmann 1986 method 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 Body weight. It is commonly used with the system or sample type ^Fetus.

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 Body weight. It is commonly used with the system or sample type ^Fetus.

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+Estimated from BPD&TTD.Hansmann 1986

What it does not mean

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

Key facts

Fetal Body weight estimated from Biparietal diameter and Transverse thoracic diameter on US by Hansmann 1986 method
Body weight
86; Bdy weight; Biparietal diameter; bod; Bodies; Echography; EFW; Est; Estimated fetal weight; estimation; Fetal; from BPD&TTD.Hansmann86; Gyn; Gynecology; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; predicted; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Transverse Thoracic Diameter; ULS; Ultrasound; Wt

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 Body weight estimated from Biparietal diameter and Transverse thoracic diameter on US by Hansmann 1986 methodEFW from BPD&TTD.Hansmann86Body weightOB.USMassPt^Fetus

Frequently asked questions

Code details

Code33139-7

SystemLOINC

Display nameFetal Body weight estimated from Biparietal diameter and Transverse thoracic diameter on US by Hansmann 1986 method

DescriptionBody weight

Short nameEFW from BPD&TTD.Hansmann86

ComponentBody weight

PropertyMass

TimingPt

System (specimen)^Fetus

ScaleQn

MethodUS+Estimated from BPD&TTD.Hansmann 1986

ClassOB.US

Example unitskg

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.70

Part names

Body weightMassPt^FetusQnUS+Estimated from BPD&TTD.Hansmann 1986Point in time (spot)Ultrasound+Estimated from BPDandTTD.Hansmann 1986

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.