LOINCActiveObservation

LOINC Code 77545-2: Premorbid estimate # [AmNART]

77545-2 is a LOINC code used to identify Premorbid estimate # [AmNART] 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 Premorbid estimate. 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 Premorbid estimate. 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: AmNART

What it does not mean

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

Key facts

Premorbid estimate # [AmNART]
Premorbid estimate
American National Adult Reading Test (AmNART) premorbid intelligence estimate number for the participant. The premorbid estimate was calculated using Grober and Sliwinski's formula [PMID1779032], which also accounts for years of education.
American National Adult Reading Test (AmNART); Cnt; Count; Number; Point in time; QNT; Quan; Quant; Quantitative; Random; Survey

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

Premorbid estimate # [AmNART]Premorbid estimateSURVEY.AMNARTNumPt^PatientQn

Frequently asked questions

Code details

Code77545-2
SystemLOINC
Display namePremorbid estimate # [AmNART]
DescriptionPremorbid estimate
ComponentPremorbid estimate
PropertyNum
TimingPt
System (specimen)^Patient
ScaleQn
MethodAmNART
ClassSURVEY.AMNART
Example units#
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.52
Last changed2.58

Part names

Premorbid estimateNumPt^PatientQnAmNARTNumber (count)Point 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 77545-2 | HealthAssure