ICD-10-CM > R00-R99 > R40-R46 > R40 > R40.2 > R40.21 > R40.214 R40.214 Coma scale, eyes open, spontaneous Non-Billable/Non-Specific Applicable To Coma scale eye opening score of 4 Codes R40.2140..., unspecified timeR40.2141..., in the field [EMT or ambulance]R40.2142..., at arrival to emergency departmentR40.2143..., at hospital admissionR40.2144..., 24 hours or more after hospital admission