Concussion w loss of consciousness of unsp duration, subs

This code signifies a concussion where the patient experienced a period of unconsciousness of unknown length, and this is not the initial treatment for the injury. It indicates a follow-up visit or ongoing care for a previously diagnosed concussion with unquantified loss of consciousness.

Apply this code for patients presenting for follow-up care, medication management, or symptom monitoring related to a concussion with unstated duration of unconsciousness. Documentation should clearly state "concussion," "loss of consciousness," and indicate that this is not the initial encounter for the injury.

• Ensure documentation specifies "subsequent encounter" or similar language indicating ongoing care.
• Do not use this code for the initial treatment of the concussion; refer to the acute care codes.
• If the duration of loss of consciousness is known, a more specific code from the S06.0X1-S06.0X4 series should be used.