ICD-10-CM > R00-R99 > R40-R46 > R40 > R40.2 > R40.21 > R40.213 R40.213 Coma scale, eyes open, to sound Non-Billable/Non-Specific Applicable To Coma scale eye opening score of 3 Codes R40.2130..., unspecified timeR40.2131..., in the field [EMT or ambulance]R40.2132..., at arrival to emergency departmentR40.2133..., at hospital admissionR40.2134..., 24 hours or more after hospital admission