ICD-10-CM > R00-R99 > R40-R46 > R40 > R40.2 > R40.24 > R40.244 R40.244 Other coma, without documented Glasgow coma scale score, or with partial score reported Non-Billable/Non-Specific Codes R40.2440..., unspecified timeR40.2441..., in the field [EMT or ambulance]R40.2442..., at arrival to emergency departmentR40.2443..., at hospital admissionR40.2444..., 24 hours or more after hospital admission