Score the BIMS cognitive screening from the MDS 3.0. Tests repetition, temporal orientation, and recall with interpretation thresholds for intact, moderate, and severe impairment.
The Brief Interview for Mental Status (BIMS) is a standardized cognitive screening tool included in Section C of the Minimum Data Set (MDS) 3.0. It is federally mandated for all residents in Medicare/Medicaid-certified nursing homes in the United States, making it one of the most frequently administered cognitive assessments in healthcare.
BIMS assesses three cognitive domains in approximately 2-3 minutes: immediate memory (repetition of three words), temporal orientation (year, month, day of week), and delayed recall (recalling the three words after the orientation questions). The total score ranges from 0 to 15, with higher scores indicating better cognition.
Scores of 13-15 indicate intact cognition, 8-12 suggest moderate impairment, and 0-7 indicate severe impairment. This calculator provides domain-level scoring, visual breakdown, classification with recommended follow-up actions, and a comparison table of common cognitive screening instruments used in clinical practice. It keeps the repetition, orientation, and recall items together so routine documentation can be checked quickly without changing the scoring structure. Check the example with realistic values before reporting.
BIMS scoring is simple in principle, but it is still helpful to have the repetition, orientation, and recall sections organized in one place. This calculator supports that workflow by keeping the item scores and total score together, which makes review easier during routine MDS documentation and when comparing one screening with a later one.
BIMS Total = Repetition (0-6) + Temporal Orientation (0-3) + Recall (0-6) Max score: 15 Repetition scoring: 2 = first attempt, 1 = second attempt, 0 = unable Recall scoring: 2 = recalled without cue, 1 = recalled with categorical cue, 0 = not recalled Orientation scoring: 1 = correct (within tolerance), 0 = incorrect
Result: BIMS: 12/15 — Moderately impaired.
Repetition 6 + Temporal 2 + Recall 4 = 12. This falls in the moderate impairment range (8-12). The patient registered all three words but had difficulty with temporal orientation and needed a cue for one recall item. Further cognitive evaluation is recommended.
The Minimum Data Set (MDS) is a comprehensive assessment instrument mandated by CMS (Centers for Medicare & Medicaid Services) for all residents of certified nursing homes. BIMS was introduced in MDS 3.0 (2010) to replace the previously used Modified Mini-Mental State Examination (3MS), providing a standardized, non-copyrighted tool that emphasizes direct patient interview rather than staff observation.
BIMS focuses on three core cognitive functions: (1) Registration/encoding — the ability to attend to and initially process new information, tested by word repetition. (2) Temporal orientation — awareness of current time context, reflecting cortical integration and recent memory. (3) Delayed recall — the ability to store and retrieve information after a brief delay, the most sensitive indicator of early cognitive decline and hippocampal function.
BIMS scores drive care planning in nursing facilities. Severely impaired residents (0-7) may require simplified communication strategies, environmental modifications for safety, ADL assistance plans, and behavioral management protocols. Moderately impaired residents (8-12) benefit from cognitive stimulation activities, medication review for cognitive side effects, and monitoring for further decline. Intact residents (13-15) still need periodic reassessment, as cognitive function can change rapidly with acute illness, medication changes, or depression.
BIMS was developed specifically for MDS 3.0 as a brief, standardized, non-copyrighted cognitive screening. Unlike the MMSE, BIMS is free to use, takes only 2-3 minutes, and was designed for nursing home populations. The MMSE is copyrighted by Psychological Assessment Resources and requires licensing fees.
Per MDS 3.0 requirements, BIMS is administered at admission, annually, and with significant change in status. In practice, it is often assessed quarterly. It should also be readministered if clinical change in cognition is suspected.
If the patient is unable to communicate verbally, BIMS cannot be administered. In this case, staff should complete the Staff Assessment of Mental Status (staff assessment for mental status) as an alternative, which uses observation-based items rather than patient interview.
BIMS has moderate sensitivity (~80%) for moderate-to-severe impairment but may miss mild cognitive impairment (MCI). For detecting MCI, the MoCA (Montreal Cognitive Assessment) or SLUMS (Saint Louis University Mental Status) are more sensitive screening tools.
MoCA is more comprehensive (30 items, 10-15 minutes, tests executive function, visuospatial, naming, clock drawing) and more sensitive to mild impairment. BIMS is faster (2-3 minutes, 7 items) and designed for nursing home use. MoCA is better for clinic-based comprehensive screening.
No. BIMS is a screening tool, not a diagnostic instrument. Abnormal BIMS scores should trigger referral for comprehensive cognitive evaluation (neuropsychological testing, medical workup for reversible causes, imaging if indicated).