BIMS Calculator

Administering the Brief Interview for Mental Status (BIMS) requires direct interaction with the patient in a quiet environment. Follow these exact steps to ensure an accurate, standardized cognitive assessment:

Step 1 (Repetition): Instruct the patient: "I am going to say three words for you to remember. Please repeat the words after I have said all three." Clearly state: "Sock, Blue, Bed." Score 1 point for each word the patient successfully repeats on their first attempt (Maximum 3 points).

Step 2 (Temporal Orientation): Ask the patient three specific orientation questions: "What year is it right now?", "What month are we in right now?", and "What day of the week is today?" Score each question according to the precise grading rubric (Maximum 3 points).

Step 3 (Recall): Ask the patient: "Let's go back to an earlier question. What were those three words that I asked you to repeat?" Allow them time to answer without cues. If they struggle, provide category cues (e.g., "Something to wear" for Sock, "A color" for Blue, "A piece of furniture" for Bed). Score each word based on how much cueing was required to achieve recall (Maximum 9 points).

Step 4: Enter the individual scores into the BIMS Calculator fields and click "Calculate".

Step 5: Review the total score out of 15 and read the clinical interpretation to determine the level of cognitive impairment.

The BIMS score is generated by summing the points achieved across three specific cognitive domains, resulting in a maximum possible score of 15. The Centers for Medicare & Medicaid Services (CMS) standardized this scoring matrix.

1. Word Repetition (0-3 Points): 1 point for each word (Sock, Blue, Bed) successfully repeated on the first try. 2. Temporal Orientation (0-3 Points): - Year: Correct (1 pt), Missed by 1-5 years (0 pts, or partial credit based on specific MDS rules), Incorrect by >5 years (0 pts). - Month: Correct within 5 days (1 pt), Incorrect (0 pts). - Day of Week: Correct (1 pt), Incorrect (0 pts). 3. Word Recall (0-9 Points): Evaluates short-term memory. Each of the three words is scored individually: - 3 points: Recalled spontaneously without any cues. - 2 points: Recalled after a semantic category cue. - 1 point: Recalled after a multiple-choice cue. - 0 points: Unable to recall despite all cues.

Interpretation Scale: - 13 to 15: Cognitively Intact - 8 to 12: Moderately Impaired - 0 to 7: Severely Impaired

The Brief Interview for Mental Status (BIMS) Calculator is a standardized cognitive assessment tool universally required by the Centers for Medicare & Medicaid Services (CMS) for residents in skilled nursing facilities as part of the Minimum Data Set (MDS) 3.0. Unlike lengthier psychiatric evaluations, the BIMS is designed specifically for the frail, elderly population and can be completed in under three minutes. It efficiently evaluates immediate memory, temporal orientation, and short-term recall. Identifying cognitive decline is critical for care planning, determining the resident's ability to make medical decisions, establishing wandering risks, and tailoring communication strategies for nursing staff.

This calculator is for informational purposes only and does not constitute medical advice. Always consult a qualified doctor or geriatric specialist before making care plan decisions based on these results.