Necatoriasis due to necator americanus

This code represents an infection of the human gastrointestinal tract caused by the hookworm Necator americanus. This parasitic infection, also known as New World hookworm, typically leads to symptoms such as anemia, abdominal pain, diarrhea, and weight loss due to chronic blood loss from the intestinal attachment of the worms.

Use this code when documentation explicitly states a diagnosis of necatoriasis specifically attributed to Necator americanus. This diagnosis is typically confirmed through microscopic examination of stool samples identifying characteristic hookworm eggs or adult worms.

• Ensure the documentation specifies Necator americanus as the causative agent; other hookworm species are coded differently.
• Consider co-morbid conditions such as iron deficiency anemia, which is a common complication and should be coded separately.
• Do not confuse with ancylostomiasis, which is caused by Ancylostoma duodenale (Old World hookworm).