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.

LOINCActive

LOINC Code 8291-7: Head Occipital-frontal circumference --at birth- by US

Name: LOINC Code 8291-7: Head Occipital-frontal circumference --at birth- by US
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:08.166Z

8291-7 is a LOINC code used to identify Head Occipital-frontal circumference --at birth- by 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 Circumference.occipital-frontal^at birth. It is commonly used with the system or sample type Head.

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 Circumference.occipital-frontal^at birth. It is commonly used with the system or sample type Head.

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
Method: US

What it does not mean

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

Key facts

Head Occipital-frontal circumference --at birth- by US
Circumference.occipital-frontal^at birth
@ birth; BODY CIRCUMFERENCE.MOLEC; Brain; Circumf OFC; Cranial; Cranium; Echoencephalogram; Echoencephalography; Echography; Girth; Intracranial; Length; New born; Newborn; Point in time; QNT; Quan; Quant; Quantitative; Random; Skull; Sonogram; Sonograph; Sonography; 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

Head Occipital-frontal circumference --at birth- by USHead Circumf OFC @ birth by USCircumference.occipital-frontal^at birthBDYCRC.MOLECBirth Head Circumference by UltrasoundLenPt

Frequently asked questions

Code details

Code8291-7

SystemLOINC

Display nameHead Occipital-frontal circumference --at birth- by US

DescriptionCircumference.occipital-frontal^at birth

Short nameHead Circumf OFC @ birth by US

ComponentCircumference.occipital-frontal^at birth

PropertyLen

TimingPt

System (specimen)Head

ScaleQn

MethodUS

ClassBDYCRC.MOLEC

Example unitscm

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0h(2)

Last changed2.48

Consumer names

Birth Head Circumference by Ultrasound

Part names

Circumference.occipital-frontal^at birthLenPtHeadQnUSLengthPoint 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.