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.

LOINCObservation

LOINC Code 12127-7: Deprecated Fetal Yolk sac Quantitative Study observation US

Name: LOINC Code 12127-7: Deprecated Fetal Yolk sac Quantitative Study observation US
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:22.974Z

12127-7 is a LOINC code used to identify Deprecated Fetal Yolk sac Quantitative Study observation 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 Study observation. It is commonly used with the system or sample type Yolk sac^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 Study observation. It is commonly used with the system or sample type Yolk sac^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: DEPRECATED
Order vs observation: Observation
Method: US

What it does not mean

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

Key facts

Deprecated Fetal Yolk sac Quantitative Study observation US
Study observation
Echography; Fetal; Finding; Findings; Gyn; Gynecology; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Study report; ULS; Ultrasound; YS

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

Deprecated Fetal Yolk sac Quantitative Study observation USDeprecated US Yolk sac Fetus Study QnStudy observationOB.USFindPtYolk sac^fetus

Frequently asked questions

Code details

Code12127-7

SystemLOINC

Display nameDeprecated Fetal Yolk sac Quantitative Study observation US

DescriptionStudy observation

Short nameDeprecated US Yolk sac Fetus Study Qn

ComponentStudy observation

PropertyFind

TimingPt

System (specimen)Yolk sac^Fetus

ScaleQn

MethodUS

ClassOB.US

StatusDEPRECATED

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0j-a

Last changed2.42

Part names

Study observationFindPtYolk sac^fetusQnUSFindingPoint 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.