Ascariasis (B77)
ICD-10 codes for Ascariasis cover infections caused by the Ascaris lumbricoides parasite affecting various parts of the body. These codes classify both the general infection and specific complications such as intestinal or pulmonary involvement.
Codes in the B77 category identify different manifestations of ascariasis. For example, B77.0 is used for ascariasis with intestinal complications, a condition also known as larval ascariasis or parasitic infection of the colon by Ascaris lumbricoides. When ascariasis leads to lung involvement, B77.81 applies, capturing pneumonia caused by the parasite, sometimes referred to as pulmonary nematodiasis. Other complications like biliary or ocular infections fall under B77.89. For cases where the specific location or complication is not documented, B77.9 provides an unspecified ascariasis code, including infections from related species such as Ascaridia or Ascaris suum. This classification helps ensure precise coding for parasitic infections caused by Ascaris, supporting accurate diagnosis and treatment documentation.
Instructional Notations
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- ascaridiasis
- roundworm infection
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Ascariasis
Infection by nematodes of the genus ASCARIS. Ingestion of infective eggs causes diarrhea and pneumonitis. Its distribution is more prevalent in areas of poor sanitation and where human feces are used for fertilizer.
Ascaris
A genus of nematodes of the superfamily ASCARIDOIDEA whose species usually inhabit the intestine.
