Infestation, unspecified

This code signifies the presence of an infestation by an external parasite or organism where the specific type of parasite is unknown or not documented. It represents a general diagnosis of an infestation without further detail regarding the causative agent.

This code is appropriate when a patient presents with symptoms indicative of an infestation (e.g., itching, rash, visible organisms) but the specific parasitic agent cannot be identified through clinical examination or laboratory testing. Documentation should clearly state "infestation, unspecified" or similar language indicating the lack of specificity.

• Avoid using this code if a more specific infestation (e.g., pediculosis, scabies) can be identified and coded.
• Query the provider for more specific documentation if possible to avoid using an unspecified code.
• Consider sequencing this code as a primary diagnosis when the infestation is the primary reason for the encounter.