BIMS Calculator

Add six mental-status domain scores and interpret the resulting 18-point cognitive screening total.

Brief Interview for Mental Status score
Enter each domain score within its displayed range after a standardized interview.

About the BIMS assessment

The Brief Interview for Mental Status is a short, structured cognitive screen used frequently in post-acute and long-term care. It helps staff document whether an interviewable person can register information, remain oriented, and recall information after a brief delay. This port follows the six-domain, eighteen-point scoring model shown by the source calculator: orientation contributes up to four points, registration three, attention five, recall three, language two, and praxis one. The calculator adds the entered domain scores. Totals from thirteen through eighteen are labeled normal within this model, totals from eight through twelve are labeled mild impairment, and totals from zero through seven are labeled moderate to severe impairment. These bands summarize screening performance; they are not a diagnosis of dementia, delirium, or any particular neurological condition. Education, language, hearing, vision, fatigue, anxiety, pain, medications, cultural familiarity, and the testing environment can all affect performance. Standardized interviewing matters as much as arithmetic. Questions and prompts should be presented consistently, adequate time should be allowed, and responses should be scored according to the assessment protocol rather than informal impressions. The examiner should document barriers and avoid coaching that changes what the task measures. When serial assessments are compared, similar conditions and procedures make the change more interpretable. A low score calls for clinical context. Acute confusion or a sudden decline may indicate delirium caused by infection, metabolic disturbance, medication effects, dehydration, hypoxia, or another urgent illness. A more gradual pattern may warrant a comprehensive cognitive, functional, neurological, and medication evaluation. Even a high score does not rule out subtle executive dysfunction or concerns reported by the person or family, because brief screens sample only selected abilities. Use this page to total already established domain scores and communicate the broad range clearly. It does not replace direct administration by trained staff, validated local documentation requirements, or a full diagnostic assessment. If cognition changes suddenly, safety is compromised, or new neurological symptoms appear, seek prompt medical evaluation rather than relying on a screening score alone.

BIMS scoring examples

Domain scoresTotalScreening interpretation
4 + 3 + 5 + 3 + 2 + 118 / 18Falls within the normal range in this scoring model.
3 + 2 + 3 + 2 + 1 + 112 / 18Falls within the mild impairment range.
2 + 1 + 2 + 1 + 1 + 07 / 18Falls within the moderate to severe impairment range.

How to use the BIMS calculator

  1. Administer each cognitive domain using the standardized interview and scoring instructions.
  2. Enter the awarded points for orientation, registration, attention, recall, language, and praxis.
  3. Check that every value stays within the maximum shown beside the domain.
  4. Calculate the total and interpret it with baseline function, interview conditions, and clinical findings.

BIMS FAQ

What is the highest BIMS score in this calculator?

The maximum is 18 points across the six displayed domains. Higher scores indicate better performance on the sampled tasks but do not assess every aspect of cognition.

Does a low score diagnose dementia?

No. A low screening score identifies a need for context and potentially further evaluation. Delirium, communication barriers, illness, medication effects, and sensory impairment can also lower performance.

Can BIMS scores be compared over time?

Yes, repeated standardized screening can help document change. Comparisons are most useful when administration methods and testing conditions remain consistent and important clinical events are recorded.

Who should administer the assessment?

A trained healthcare professional should conduct and score the interview according to the applicable protocol. This calculator only totals scores that have already been assigned.

What should happen after a sudden cognitive decline?

A sudden decline warrants prompt clinical assessment for delirium and reversible medical causes. New weakness, speech difficulty, severe headache, or altered consciousness may require emergency evaluation.