Louping ill

This code represents louping ill, a tick-borne viral encephalomyelitis primarily affecting sheep, but transmissible to humans. In humans, it typically presents as a biphasic illness with an initial febrile phase followed by a more severe neurological phase involving meningitis or encephalitis.

Use this code for documented cases of louping ill in human patients. This diagnosis is typically supported by a history of tick exposure, characteristic neurological symptoms, and laboratory confirmation of the louping ill virus.

• Ensure documentation clearly specifies louping ill as the causative agent of the encephalitis or meningitis.
• Distinguish from other tick-borne encephalitides; laboratory confirmation is crucial.
• Code any associated neurological manifestations, such as meningitis or encephalitis, as secondary diagnoses.