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 53670-6: Fetal Mandible Maximum length US

Name: LOINC Code 53670-6: Fetal Mandible Maximum length US
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:36.581Z

53670-6 is a LOINC code used to identify Fetal Mandible Maximum length 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 Length.max. It is commonly used with the system or sample type Mandible^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 Length.max. It is commonly used with the system or sample type Mandible^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.measured

What it does not mean

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

Key facts

Fetal Mandible Maximum length US
Length.max
Measurements is made in the sonographic plane which includes the fetal mandible and the hypopharynx.
Echography; Fetal; Gyn; Gynecology; Jaw; Largest; Len; Length; Mand; Maximal; Maximum; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Peak; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; US+Meas

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 Mandible Maximum length USFet Mandible Length.max US.measLength.maxOB.USLenPtMandible^fetus

Frequently asked questions

Code details

Code53670-6

SystemLOINC

Display nameFetal Mandible Maximum length US

DescriptionLength.max

Short nameFet Mandible Length.max US.meas

ComponentLength.max

PropertyLen

TimingPt

System (specimen)Mandible^Fetus

ScaleQn

MethodUS.measured

ClassOB.US

Example unitsmm

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.26

Last changed2.48

Part names

Length.maxLenPtMandible^fetusQnUS.measuredLengthPoint in time (spot)Ultrasound.measured

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.