Other coma, without documented Glasgow, or w/part score, EMR

This code signifies a state of unconsciousness, distinct from a vegetative state or brain death, where the patient's Glasgow Coma Scale (GCS) score is either not recorded or is incomplete upon presentation to the emergency department. It indicates a significant alteration in neurological function without the full GCS assessment being available at the initial ED encounter.

Apply this code when a patient presents to the ED in a comatose state, and the medical record explicitly states that a GCS score was not documented or only a partial score was recorded at the time of arrival. This is appropriate when the physician's assessment confirms coma but the standardized GCS assessment is absent or incomplete for the initial ED presentation.

• Do not use this code if a complete GCS score is documented at ED arrival, even if the score is very low.
• Distinguish from other coma codes (e.g., R40.21, R40.22, R40.23) which specify the GCS score.
• Ensure documentation clearly supports the "without documented GCS" or "partial score" aspect at ED arrival.