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 95939-5: Fetal Crown Rump length percentile per estimated gestational age

Name: LOINC Code 95939-5: Fetal Crown Rump length percentile per estimated gestational age
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:25.849Z

95939-5 is a LOINC code used to identify Fetal Crown Rump length percentile per estimated gestational age 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.crown rump. It is commonly used with the system or sample type ^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.crown rump. It is commonly used with the system or sample type ^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: Per estimated gestational age

What it does not mean

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

Key facts

Fetal Crown Rump length percentile per estimated gestational age

Length.crown rump

Crown-rump length (CRL) can be used to predict risk of fetal loss. Small CRL (e.g., less than 10th percentile) at 40-80 days' gestation indicates significant risk of fetal loss and the need for additional ultrasound testing. [PMID28062907]

Comp of est fetal wgt W std pop dist at same; CRL; Est; estimation; Fetal; Gest; Gestation; Gyn; Gynecology; Len; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Per est GA; Percentile; Point in time; Prenatal; QNT; Quan; Quant; Quantitative; Random

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 Crown Rump length percentile per estimated gestational ageFet CRL US Prctl per est GALength.crown rumpOB.USPrctlPt^Fetus

Frequently asked questions

Code details

Code95939-5

SystemLOINC

Display nameFetal Crown Rump length percentile per estimated gestational age

DescriptionLength.crown rump

Short nameFet CRL US Prctl per est GA

ComponentLength.crown rump

PropertyPrctl

TimingPt

System (specimen)^Fetus

ScaleQn

MethodPer estimated gestational age

ClassOB.US

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.69

Last changed2.72

Part names

Length.crown rumpPrctlPt^FetusQnPer estimated gestational ageCrown Rump lengthPercentilePoint 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.