LOINCActiveObservation

LOINC Code 12161-6: OB ultrasound imaging device Vendor serial number

12161-6 is a LOINC code used to identify OB ultrasound imaging device Vendor serial number 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 Vendor serial number. It is commonly used with the system or sample type OB ultrasound imaging device.

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 Vendor serial number. It is commonly used with the system or sample type OB ultrasound imaging device.

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

What it does not mean

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

Key facts

  • OB ultrasound imaging device Vendor serial number
  • Vendor serial number
  • Gyn; Gynecology; Ident; Identifier; No; Nominal; Num; OB; OB US Imaging device; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; Random; Serial #; Ultrasound

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

OB ultrasound imaging device Vendor serial numberOB US Imaging device Serial #Vendor serial numberOB.USIDPtOB ultrasound imaging device

Frequently asked questions

Code details

Code12161-6
SystemLOINC
Display nameOB ultrasound imaging device Vendor serial number
DescriptionVendor serial number
Short nameOB US Imaging device Serial #
ComponentVendor serial number
PropertyID
TimingPt
System (specimen)OB ultrasound imaging device
ScaleNom
ClassOB.US
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.27

Part names

Vendor serial numberIDPtOB ultrasound imaging deviceNomIdentifierPoint 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.