LOINCActiveObservation

LOINC Code 99534-0: Crown heel length Measured [Length]

99534-0 is a LOINC code used to identify Crown heel length Measured [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 Length.crown heel. It is commonly used with the system or sample type ^Patient.

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 heel. It is commonly used with the system or sample type ^Patient.

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: Measured

What it does not mean

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

Key facts

  • Crown heel length Measured
  • Length.crown heel
  • CHL; H+P; H+P.PX; Len; Length; P prime; 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

Crown heel length Measured [Length]Crown heel length MeasuredCHL MeasuredLength.crown heelH&P.PXCrown heel lengthLen

Frequently asked questions

Code details

Code99534-0
SystemLOINC
Display nameCrown heel length Measured [Length]
DescriptionLength.crown heel
Short nameCHL Measured
ComponentLength.crown heel
PropertyLen
TimingPt
System (specimen)^Patient
ScaleQn
MethodMeasured
ClassH&P.PX
Example unitscm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Crown heel length

Part names

Length.crown heelLenPt^PatientQnMeasuredCrown heel lengthLengthPoint 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 99534-0 | HealthAssure