Contus/lac right cerebrum w LOC of 1-5 hrs 59 min, sequela

This code signifies a traumatic brain injury involving bruising and tearing of the right cerebral hemisphere, accompanied by a period of unconsciousness lasting between one and six hours. The "sequela" seventh character indicates that this code is used to report a late effect or complication of the initial injury, occurring after the acute phase has passed.

This code is appropriate for documenting residual neurological deficits or ongoing complications directly attributable to a past right cerebral contusion and laceration with a specified duration of unconsciousness. Documentation must clearly link the current condition to the previous brain injury and specify the initial loss of consciousness duration. Examples include post-traumatic epilepsy, cognitive impairments, or persistent motor deficits.

• Ensure the medical record explicitly states "sequela" or indicates a chronic condition resulting from the specified brain injury.
• Verify the initial duration of loss of consciousness falls precisely within the 1 hour to 5 hours 59 minutes range.
• Always code the specific sequela (e.g., G40.509 for post-traumatic epilepsy) first, followed by this code as a secondary diagnosis.