Late effects of other and unspecified infectious and parasitic diseases

This code signifies residual conditions or sequelae that persist long after the acute phase of an infectious or parasitic disease has resolved. It is used when the original infection is no longer active but has left lasting health impairments. These late effects are not due to ongoing infection but rather to the damage or changes caused by the past illness.

This code is appropriate when a patient presents with a chronic condition directly attributable to a prior infectious or parasitic disease, and a more specific late effect code is unavailable. Documentation should clearly link the current condition to a previously diagnosed infectious or parasitic illness, specifying that the acute infection has concluded. Examples include neurological deficits following meningitis or organ damage after a severe parasitic infestation.

• Always sequence the specific late effect condition first, followed by this code to indicate its etiology.
• Do not use this code if the infectious or parasitic disease is still active; instead, code the active infection.
• Ensure documentation explicitly states "late effect of" or "sequela of" a specified infectious or parasitic disease.