Comprehensive geriatric assessment (CGA) — a multidimensional, interdisciplinary diagnostic process that evaluates older adults’ medical conditions, physical function, cognition, psychological status, social supports, and environmental factors — identifies problems that standard medical evaluations miss and produces individualized treatment and care plans that improve outcomes for complex older adults. Geriatric medicine specialists and increasingly primary care clinics with geriatric training provide these systematic assessments. This guide explains what a comprehensive geriatric assessment involves and who benefits most.
Domains of Comprehensive Geriatric Assessment
Medical Assessment
Complete medication review (polypharmacy, inappropriate medications, drug interactions); assessment of chronic diseases and their management; pain assessment; nutritional status; sensory function (vision and hearing); continence; and vaccine status.
Functional Assessment
Activities of daily living (ADL) — basic self-care (bathing, dressing, toileting, eating, transferring). Instrumental activities of daily living (IADL) — complex tasks (managing finances, medications, transportation, shopping). Mobility, gait, and balance (Timed Up and Go, Tinetti assessment).
Cognitive Assessment
Standardized cognitive screening (Mini-Cog, MoCA, MMSE) and, when indicated, neuropsychological testing. Distinguishing normal aging from MCI from dementia. Assessing decision-making capacity for specific decisions.
Psychological Assessment
Depression screening (PHQ-9), anxiety assessment, and caregiver stress evaluation. Many older adults suffer from undertreated depression that masquerades as cognitive decline or physical illness.
Social and Environmental Assessment
Social support network, caregiver availability and stress, housing safety, financial resources, transportation access, food security, and isolation.
Who Benefits Most
Comprehensive geriatric assessment is most valuable for: frail older adults (with multiple comorbidities, functional limitations, cognitive impairment, or geriatric syndromes including falls, delirium, malnutrition); older adults with complex care needs spanning multiple specialists without coherent coordination; and older adults facing major care transitions (hospitalization, care facility placement).
Conclusion
Comprehensive geriatric assessment identifies treatable conditions, inappropriate medications, functional limitations, and unmet social needs that standard medical care misses — and it produces individualized management plans that improve function, reduce hospitalizations, and support older adults’ ability to remain in their preferred living environment. If you are an older adult with multiple complex conditions or are a family member concerned about an aging relative’s declining function, ask for a comprehensive geriatric evaluation.
FAQs – Geriatric Assessment
Q1. At what age should someone consider a geriatric evaluation?
A: There is no fixed age threshold — geriatric assessment is indicated by complexity and frailty rather than calendar age. An 85-year-old marathon runner may not need geriatric assessment; a 70-year-old with multiple chronic conditions, falls, cognitive concerns, and polypharmacy may benefit significantly. The presence of geriatric syndromes and functional decline triggers the need regardless of chronological age.
Q2. What is frailty?
A: Frailty is a clinical syndrome of decreased reserve and resistance to stressors — characterized by unintentional weight loss, exhaustion, weakness, slow walking speed, and low physical activity. Frail individuals have significantly higher risk of adverse health outcomes (hospitalization, disability, death) from minor stressors that would be easily handled by non-frail individuals. Frailty assessment is a component of comprehensive geriatric evaluation.
Q3. Can geriatric assessment be performed at a regular primary care clinic?
A: Elements of geriatric assessment are increasingly integrated into primary care — Medicare Annual Wellness Visits include cognitive screening, fall risk assessment, and functional assessment. For the most complex older adults needing comprehensive multidisciplinary evaluation, referral to a dedicated geriatric assessment clinic or program provides deeper assessment.
Q4. What is polypharmacy and why is it a geriatric concern?
A: Polypharmacy (five or more medications) is extremely common in older adults — the average 65-and-older patient takes more than five prescription medications. Drug-drug interactions, drug-disease interactions (medications inappropriate for specific comorbidities), and cumulative side effects are significantly more problematic in older adults due to altered drug metabolism and increased vulnerability. Comprehensive medication review and deprescribing of potentially inappropriate medications is a core geriatric intervention.
Q5. What is the Beers Criteria?
A: The American Geriatrics Society Beers Criteria is a list of medications that are potentially inappropriate for use in adults 65 and older — identified as having increased risk of adverse effects in this population due to altered pharmacokinetics, increased sensitivity, or drug-disease interactions. Clinicians and pharmacists use the Beers Criteria to identify medications to avoid or use with extra caution in older adults.
