Traum subdr hem w LOC of unsp duration, sequela

This code signifies a chronic or late effect of a traumatic subdural hemorrhage where the patient experienced an initial loss of consciousness of an unknown duration. It indicates that the subdural hemorrhage itself is no longer an acute injury but rather a residual condition or complication stemming from the original trauma.

Apply this code when documentation clearly states a patient is presenting for treatment of a sequela (e.g., chronic headache, cognitive deficits, hydrocephalus) directly attributable to a past traumatic subdural hemorrhage that involved an unspecified period of unconsciousness. The medical record must explicitly link the current condition to the previous traumatic subdural hemorrhage.

• Always sequence this sequela code after the code for the specific residual condition being treated (e.g., G90.5 for complex regional pain syndrome, G93.40 for unspecified encephalopathy).
• Do not use this code for acute or active traumatic subdural hemorrhages; those require codes from the acute S06.5X category without the "S" seventh character.
• Ensure documentation specifies "sequela" or "late effect" and links the current presentation to the past traumatic subdural hemorrhage with loss of consciousness.