Unsp focal TBI w LOC >24 hr w ret consc lev, sequela

This code signifies a long-term consequence of a localized traumatic brain injury where the patient experienced a coma lasting over 24 hours but eventually recovered to their baseline cognitive state. It indicates that the acute injury has resolved, but the patient is now presenting for care related to a residual effect or complication stemming from that past TBI.

Apply this code when a patient is being treated for a sequela (e.g., chronic headaches, cognitive deficits, post-traumatic epilepsy) directly attributable to a previously sustained focal TBI. Documentation must clearly state a history of a focal TBI with a loss of consciousness exceeding 24 hours and a subsequent return to pre-injury consciousness.

• Always sequence the sequela code (e.g., G40.509 for post-traumatic epilepsy) first, followed by this TBI sequela code.
• Ensure documentation explicitly states "sequela" or "due to previous TBI" for the current condition being treated.
• Do not use this code for acute TBI encounters; it is strictly for residual effects after the acute phase has passed.