Personal history of unspecified disease

This code indicates a patient's past medical condition that is no longer active and for which the specific nature of the disease is not documented or is unknown. It signifies a history of an illness without further detail regarding its type or classification.

Apply this code when a patient's medical record mentions a "history of disease" or "past illness" without specifying the particular diagnosis. It is appropriate when the provider documents a history of a condition but lacks the specificity to assign a more precise history code.

• Always strive for a more specific history code if available and documented.
• Avoid using this code if the specific disease is known but simply not listed in the ICD-9-CM index.
• This code should not be used for current, active conditions.