ICD-10-CM > R00-R99 > R40-R46 > R40 > R40.2 > R40.24 > R40.242 R40.242 Glasgow coma scale score 9-12 Non-Billable/Non-Specific Codes R40.2420..., unspecified timeR40.2421..., in the field [EMT or ambulance]R40.2422..., at arrival to emergency departmentR40.2423..., at hospital admissionR40.2424..., 24 hours or more after hospital admission