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4AT (Rapid Assessment Test for Delirium)ACS-NSQIP Surgical Risk CalculatorAD8 Dementia ScreeningAnticholinergic Burden Score (ACB)Barthel IndexBeers Criteria (PIMs)Berg Balance ScaleBraden ScaleCAM — Confusion Assessment MethodClinical Dementia Rating (CDR)Clinical Frailty Scale (CFS)Clock Drawing Test (CDT)Cornell Scale for Depression (CSDD)DOSS (Delirium Observation Screening Scale)DRS-R-98 (Delirium Rating Scale)Drug Burden Index (DBI)Edmonton Frail Scale (EFS)FRAIL ScaleFried Frailty PhenotypeFunctional Independence Measure (FIM)Functional Reach TestGeriatric Depression Scale (GDS-15)Groningen Frailty Indicator (GFI)HELP Score (Postoperative Delirium Risk)Hendrich II Fall Risk ModelICIQ-UI SFinterRAI Clinical AssessmentIQCODEKatz Index of Independence in ADLsLawton Instrumental ADL ScalemFI-5 Preoperative FrailtyMini Nutritional Assessment (MNA) - FullMini-CogMMSEMNA-SF (Short Form)Morse Fall ScaleMUST (Malnutrition Universal Screening Tool)Norton ScaleOAB-V8OST (Osteoporosis Screening Tool)OSTA (Osteoporosis Self-Assessment Tool for Asians)Six-Item Screener (SIS)SPMSQSTOPP/START CriteriaSTRATIFY Risk Assessment ToolTimed Up and Go (TUG) TestTriage Risk Screening Tool (TRST)Waterlow Score
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Recent Journal Updates

Alzheimers & DementiaJun 11, 2026
Plasma p‐tau markers, vascular factors, and cognitive decline in the CIMA‐Q cohort

Clinical Context

We think this might be relevant to the clinical guidance for IQCODE (Informant Questionnaire on Cognitive Decline in the Elderly).

Alzheimers & DementiaJun 11, 2026
Association of cognitive impairment and APOE ε4 with Centiloids in Hispanic and non‐Hispanic White cohorts

Clinical Context

We think this might be relevant to the clinical guidance for IQCODE (Informant Questionnaire on Cognitive Decline in the Elderly).

JAMAJun 9, 2026
Cognitive Decline May Precede Cardiovascular Events by Up to 8 Years

Clinical Context

We think this might be relevant to the clinical guidance for IQCODE (Informant Questionnaire on Cognitive Decline in the Elderly).

IQCODE

Instructions to Informant: "Compared with 10 years ago, how is the person at doing the following things? Please rate any changes you have noticed."

Score is calculated as an average. If an item does not apply (e.g. they never handled finances), leave it blank.

Rate 16 Items

1. Remembering things about family and friends e.g. occupations, birthdays

2. Remembering things that have happened recently

3. Recalling conversations a few days later

4. Remembering his/her address and telephone number

5. Remembering what day and month it is

6. Remembering where things are usually kept

7. Remembering where to find things which have been put in a different place from usual

8. Knowing how to work familiar machines around the house

9. Learning to use a new gadget or machine around the house

10. Learning new things in general

11. Following a story in a book or on TV

12. Making decisions on everyday matters

13. Handling money for shopping

14. Handling financial matters e.g. the pension, dealing with the bank

15. Handling other everyday arithmetic problems e.g. knowing how much food to buy

16. Using his/her intelligence to understand what's going on and to reason things through

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

When to Use

Screening for dementia when the patient is unavailable, untestable, or uncooperative.
Assessing cognitive decline in populations with low literacy or diverse cultural backgrounds.
Corroborating patient self-reports of memory loss with collateral history.
Retrospective assessment of premorbid cognition in patients presenting with acute delirium.

Bypassing Literacy Bias

Because the IQCODE asks an informant to compare the patient's current performance against their performance 10 years ago, it is entirely independent of the patient's baseline education, language skills, or premorbid intellect, avoiding the biases inherent in the MMSE or MoCA.

Related Scores in Practice

In clinical practice, this assessment is frequently evaluated alongside other validated measures. Depending on the patient's presentation and specific diagnostic requirements, you may also need to utilize the AD8 Dementia Screening, MMSE or the MoCA to formulate a comprehensive care plan.

Last Comprehensive Review: 2026

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