LOINCActiveObservation

LOINC Code 99525-8: Circumference (Aortic valve) [Length]

99525-8 is a LOINC code used to identify Circumference (Aortic valve) [Length] 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 Circumference. It is commonly used with the system or sample type Aortic valve.

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 Circumference. It is commonly used with the system or sample type Aortic valve.

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

  • Circumference [Length] of Aortic valve
  • Circumference
  • AO; AoV; AV; Girth; Length; Pathology; Point in time; 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

Circumference (Aortic valve) [Length]Circumference [Length] of Aortic valveCircumf AVCircumferencePATHCircumference, Aortic ValveLen

Frequently asked questions

Code details

Code99525-8
SystemLOINC
Display nameCircumference (Aortic valve) [Length]
DescriptionCircumference
Short nameCircumf AV
ComponentCircumference
PropertyLen
TimingPt
System (specimen)Aortic valve
ScaleQn
ClassPATH
Example unitscm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.72
Last changed2.72

Consumer names

Circumference, Aortic Valve

Part names

CircumferenceLenPtAortic valveQnLengthPoint 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.

LOINC Code 99525-8 | HealthAssure