Infestation, unspecified

This code signifies the presence of an infestation by an external parasite or organism when the specific type of infestation is not documented or cannot be determined. It indicates a general parasitic invasion affecting a patient, without specifying the causative agent.

This code is appropriate when documentation clearly states an "infestation" but lacks further detail regarding the specific parasite (e.g., scabies, lice, mites). It should be used when a more precise diagnosis from codes within the 130-138 range cannot be assigned due to insufficient information.

• Avoid using this code if a more specific parasitic infestation can be identified from the medical record.
• Query the provider for more specific documentation if "infestation" is noted without further detail.
• This code is a last resort when no other specific infestation code is applicable.