LOINCActiveObservation

LOINC Code 33071-2: Fetal Spine Length from T6 to L3 US

33071-2 is a LOINC code used to identify Fetal Spine Length from T6 to L3 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 from T6 to L3. It is commonly used with the system or sample type Spine^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 from T6 to L3. It is commonly used with the system or sample type Spine^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 Spine Length from T6 to L3 US
  • Length from T6 to L3
  • Echography; Fetal; Gyn; Gynecology; Len; Length; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; SL; Sonogram; Sonograph; Sonography; Spinal; Spinal Cord; 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 Spine Length from T6 to L3 USFet Spine Length from T6 to L3 US.measLength from T6 to L3OB.USLenPtSpine^fetus

Frequently asked questions

Code details

Code33071-2
SystemLOINC
Display nameFetal Spine Length from T6 to L3 US
DescriptionLength from T6 to L3
Short nameFet Spine Length from T6 to L3 US.meas
ComponentLength from T6 to L3
PropertyLen
TimingPt
System (specimen)Spine^Fetus
ScaleQn
MethodUS.measured
ClassOB.US
Example unitsmm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.70

Part names

Length from T6 to L3LenPtSpine^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.