LOINCActiveObservation

LOINC Code 11629-3: Fetal Head Binocular distance US

11629-3 is a LOINC code used to identify Fetal Head Binocular distance 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 Binocular distance. It is commonly used with the system or sample type Head^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 Binocular distance. It is commonly used with the system or sample type Head^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 Head Binocular distance US
  • Binocular distance
  • Measured from the lateral edge of one orbit to the lateral edge of the other in a coronal plane in which both orbits are symmetrical and each of the largest possible diameter.
  • Binoc D; Brain; Cranial; Cranium; Echoencephalogram; Echoencephalography; Echography; Fetal; Gyn; Gynecology; Intracranial; Length; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Outer orbital diameter; Outer orbital distance; Outer orbital width; Point in time; QNT; Quan; Quant; Quantitative; Random; Skull; 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 Head Binocular distance USFet Head Binoc D US.measBinocular distanceOB.USLenPtHead^fetus

Frequently asked questions

Code details

Code11629-3
SystemLOINC
Display nameFetal Head Binocular distance US
DescriptionBinocular distance
Short nameFet Head Binoc D US.meas
ComponentBinocular distance
PropertyLen
TimingPt
System (specimen)Head^Fetus
ScaleQn
MethodUS.measured
ClassOB.US
Example unitsmm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.48

Part names

Binocular distanceLenPtHead^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.

LOINC Code 11629-3 | HealthAssure