Unspecified protozoal disease (B64)

The ICD-10 code B64 is used to identify an unspecified protozoal disease, which covers infections caused by protozoa that are not classified under more specific codes. This code applies when a protozoal infection is confirmed but the exact type or site is unclear.

Unspecified protozoal disease (B64) encompasses a range of parasitic infections, including conditions such as protozoal conjunctivitis, protozoal myocarditis leading to dilated cardiomyopathy, protozoal esophagitis, myositis, and encephalitis caused by protozoa. These infections can affect multiple body systems; skin, eyes, heart, nervous system, and more; and sometimes complicate pregnancy or childbirth. The use of synonyms like parasitic conjunctivitis, protozoan infection, and infectious ulcer of the esophagus helps medical coders recognize related conditions when the exact protozoal cause is not specified, ensuring correct assignment of this ICD-10 code. Understanding when to apply B64 is essential for accurately coding protozoal infestations with unclear or unspecified presentations, especially when documentation lacks precise detail on the protozoan species or primary affected site.