A MoCA, the Montreal Cognitive Assessment, score of 18 to 25 falls below normal and commonly indicates possible mild cognitive impairment. It calls for prompt clinical follow-up, not a dementia label on its own. Mild cognitive impairment means thinking changes beyond normal aging while daily independence largely remains. A score in this range raises more concern at the lower end than near the top.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- What does the MoCA measure?
- Why does 18 to 25 suggest mild impairment?
- What else can affect the score?
- What should you do with an 18–25 result?
What does the MoCA measure?
The MoCA is a 30-point, clinician-administered screening that samples memory, attention, language, abstraction, orientation, and visuospatial and executive function in about 10–15 minutes, according to MoCA Cognition. A clinician asks the person to complete short tasks such as recall, naming, drawing, and orientation questions.
The total has a maximum of 30 points. Instructions add 1 point for 12 or fewer years of formal education, capped at 30, to reduce education bias.
Why does 18 to 25 suggest mild impairment?
The standard cutoff is 26 or higher for normal cognition, so 18–25 falls below normal and commonly indicates possible mild cognitive impairment, as explained in the MoCA Cognition FAQ. Common clinical banding places 18–25 as mild impairment, 10–17 as moderate impairment, and below 10 as severe impairment.
Lower scores inside 18–25 generally raise more concern. In the original validation study, MoCA detected 90% of mild cognitive impairment cases and 100% of mild Alzheimer's cases with 87% specificity at the cutoff of 26.
What else can affect the score?
MoCA is screening, not diagnosis. Age, education, language, mood, illness, and medications can affect scores.
Poor sleep, hearing loss, anxiety, depression, pain, or an unfamiliar test language can lower performance. That is why an 18–25 score requires clinical follow-up rather than a dementia label.
What should you do with an 18–25 result?
Bring the score to the primary-care clinician for full evaluation, review of medications and reversible causes, formal testing if advised, and repeat monitoring plus brain-health steps, following the guidance of the Alzheimer's Association. Bring a list of current drugs, recent illnesses, sleep and mood changes, and examples of daily difficulties.
- Ask what else could explain the score
- Ask whether hearing, vision, mood, sleep, or medications need review
- Ask whether specialist referral or neuropsychological testing is advised
- Ask when to repeat the test and what change would matter
