LOINCActive

LOINC Code 9843-4: Head Occipital-frontal circumference

9843-4 is a LOINC code used to identify Head Occipital-frontal circumference 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. 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. 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

What it does not mean

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

Key facts

  • Head Occipital-frontal circumference
  • Circumference.occipital-frontal
  • BODY CIRCUMFERENCE.MOLEC; Brain; Circumf OFC; Cranial; Cranium; Girth; Intracranial; Length; Point in time; QNT; Quan; Quant; Quantitative; Random; Skull

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 circumferenceHead Circumf OFCCircumference.occipital-frontalBDYCRC.MOLECLenPtHead

Frequently asked questions

Code details

Code9843-4
SystemLOINC
Display nameHead Occipital-frontal circumference
DescriptionCircumference.occipital-frontal
Short nameHead Circumf OFC
ComponentCircumference.occipital-frontal
PropertyLen
TimingPt
System (specimen)Head
ScaleQn
ClassBDYCRC.MOLEC
Example unitscm
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0i
Last changed2.73

Part names

Circumference.occipital-frontalLenPtHeadQnLengthPoint 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.

LOINC Code 9843-4 | HealthAssure