In simple words: This code indicates a type of listeriosis, a severe infection caused by bacteria usually found in contaminated food. It's used when the specific type of listeriosis isn't covered by another code.

This code represents a diagnosis of listeriosis not otherwise specified. It includes conditions like listerial cerebral arteritis.Listeriosis is a serious infection typically caused by ingesting food contaminated with the bacterium *Listeria monocytogenes*.It primarily affects pregnant women, newborns, older adults, and individuals with weakened immune systems. Symptoms can range from mild, flu-like illness to severe complications such as meningitis, septicemia, and miscarriage or stillbirth in pregnant women.

Example 1: A 65-year-old male with a history of diabetes presents with fever, muscle aches, and confusion.Blood cultures reveal *Listeria monocytogenes*. The patient is diagnosed with listerial septicemia and treated with intravenous antibiotics., A 30-year-old pregnant woman experiences mild flu-like symptoms.Her prenatal care provider suspects listeriosis and orders blood tests. The tests confirm the presence of *Listeria*. She receives antibiotic treatment to prevent complications for herself and the fetus., A newborn infant develops fever, lethargy, and poor feeding shortly after birth.Tests reveal listeriosis, likely acquired from the mother during childbirth.The infant receives aggressive antibiotic therapy.

Documentation should include signs and symptoms, patient history (including recent food intake and any underlying medical conditions), laboratory test results confirming the presence of *Listeria*, and treatment provided.

** The information provided is current as of November 30, 2024.Coding guidelines and medical practices can change, so it's crucial to stay updated with the latest information from official sources like the CDC and WHO.