Coma scale, best motor response, none, unspecified time

This code indicates a complete absence of motor response when assessing a patient's neurological status using the Glasgow Coma Scale (GCS). It signifies the lowest possible score for motor function, reflecting a severe impairment in brain activity. This finding is typically associated with profound neurological dysfunction or injury.

Apply this code when documentation explicitly states "no motor response" or a GCS motor score of 1, without specifying the exact time of the assessment. This is often seen in initial assessments of patients with severe head trauma, stroke, or other critical neurological events where the precise timing of the GCS evaluation isn't recorded.

• Ensure documentation clearly states "no motor response" or a GCS motor score of 1.
• Avoid using this code if a specific time for the GCS assessment (e.g., "in the field," "at arrival") is documented; instead, use the more specific codes (R40.2311-R40.2314).
• This code should be sequenced after the primary diagnosis indicating the underlying cause of the coma or neurological impairment.