Unspecified intcrn injury with LOC status unknown, sequela

This code signifies a past, unspecified head injury affecting the brain, where the original injury involved a period of unconsciousness, but the duration or presence of that loss of consciousness is not documented. It is used when residual effects or complications from this old injury are being treated or evaluated.

Apply this code when a patient presents with sequelae (e.g., chronic headaches, cognitive deficits, post-concussive syndrome) attributed to an old, unspecified intracranial injury that included a loss of consciousness of unknown duration. Documentation should clearly link the current symptoms to a prior head trauma and indicate the "sequela" status.

• Always sequence this code after the code(s) for the specific sequela being treated.
• Ensure documentation explicitly states "sequela" or "late effect" of a prior injury.
• Avoid using for acute injuries; this code is strictly for residual conditions.