Unspecified parasitic disease (B89) ICD-10-CM

About the B89 Code Range

The ICD-10 code B89 is used to classify unspecified parasitic diseases when the exact parasite or condition is not clearly defined. This code applies to various parasitic infections affecting different body systems without precise identification.

B89 covers a wide range of parasitic conditions, including infections of the skin, lungs, eyes, nervous system, and cardiovascular system, among others. Commonly referred to as "parasitic disease" or "parasitic infestation," it also includes specific conditions such as parasitic keratitis, parasitic meningitis, and parasitic myocarditis. Since the synonyms list spans numerous infections and complications associated with parasites—like parasitic cysts in the central nervous system, parasitic eyelid infestations, and arthritis caused by parasites—this code helps coders assign a diagnosis when detailed parasite identification is unavailable. For healthcare professionals and coders, using the ICD-10 code for unspecified parasitic disease B89 ensures that parasitic infections with unconfirmed species or presentations are documented accurately for treatment and billing purposes.