Other specified infestations

This code represents parasitic infestations of the skin or other body systems that are not specifically classified elsewhere in ICD-9-CM. It covers a range of less common or atypical parasitic infections that manifest clinically but do not have a dedicated, more granular code.

Use this code when documentation clearly indicates a parasitic infestation that doesn't fit into more specific categories like scabies, pediculosis, or myiasis. Examples include infestations by chiggers (Trombiculidae mites), bird mites, or other arthropods causing skin lesions or systemic symptoms. Documentation should specify the type of parasite if known, or describe the clinical presentation consistent with an unspecified or atypical infestation.

• Avoid using this code if a more specific ICD-9-CM code for the identified parasite or infestation type is available.
• Ensure the medical record supports an actual infestation, not just an allergic reaction or dermatitis of unknown origin.
• Consider sequencing this code as a primary diagnosis if the infestation is the reason for the encounter, or as a secondary diagnosis if it's a co-morbidity.