ICD-10-CM > R00-R99 > R40-R46 > R40 > R40.2 > R40.23 > R40.231 R40.231 Coma scale, best motor response, none Non-Billable/Non-Specific Applicable To Coma scale motor score of 1 Codes R40.2310..., unspecified timeR40.2311..., in the field [EMT or ambulance]R40.2312..., at arrival to emergency departmentR40.2313..., at hospital admissionR40.2314..., 24 hours or more after hospital admission