Personal history of infections of the central nervous system

This code indicates a patient's past medical history of having an infection that affected their brain, spinal cord, or the protective membranes surrounding them. This history is significant for future healthcare planning and risk assessment, even if the infection is no longer active or acute.

Use this code when documenting a patient's non-current history of conditions such as meningitis, encephalitis, or myelitis caused by an infectious agent. It is appropriate when the patient is no longer experiencing active symptoms or receiving treatment for the past CNS infection, but the history is relevant to their ongoing care.

• Always sequence this code as a secondary diagnosis, as it represents a historical condition, not a current illness.
• Ensure documentation clearly states a past infection of the CNS; do not use for current or active infections.
• Consider if there are any residual effects or sequelae from the past infection that would require additional coding.