R40.2141
ICD-10-CMComa scale, eyes open, spontaneous, in the field [EMT or ambulance]
This code indicates a patient's level of consciousness as assessed by the Glasgow Coma Scale (GCS) eye-opening component, specifically when the eyes open spontaneously without any verbal or painful stimuli. This particular GCS score was documented by emergency medical services (EMS) personnel, such as an EMT or ambulance crew, at the scene or during transport. It reflects an initial assessment of neurological function in an acute setting.
Use this code when EMS documentation clearly states a GCS eye-opening score of "spontaneous" (score of 4) and specifies that this assessment was performed in the field. This applies to patients experiencing altered mental status, head trauma, stroke, or other acute neurological events where initial GCS assessment is crucial. Documentation must explicitly link the GCS score to the pre-hospital setting.
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