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BETA v.3.0

2025 ICD-10-CM code A95.1

Urban yellow fever is a viral illness transmitted by mosquitoes.

Use additional code to identify resistance to antimicrobial drugs (Z16.-).

Medical necessity is established by the signs, symptoms, and laboratory confirmation of urban yellow fever.

The provider diagnoses the condition based on history of exposure, physical examination, signs, and symptoms. Laboratory tests include a complete blood count (CBC), prothrombin time, activated partial thromboplastin time, international rationalized ratio (INR), clotting time, polymerase chain reaction (PCR), and enzyme–linked immunosorbent assay (ELISA). Treatment is symptomatic and includes rest, fluids, antipyretics, and pain killers.

In simple words: Urban yellow fever is a disease spread by mosquitoes in cities. It can cause fever, aches, and sometimes serious problems like liver damage and bleeding.

Urban yellow fever is a viral illness caused by a virus transmitted to humans by the bite of mosquitoes, mainly Aedes aegypti. The infection typically spreads by humans infected in the jungle who travel to city environments with high urban mosquito counts. A patient with urban yellow fever may have no symptoms or exhibit mild symptoms that include fever, chills, headache, arthralgias, myalgias, nausea, vomiting, fatigue, and weakness. These symptoms may lead to complications such as jaundice, shock, multiple organ failure, hemorrhage, petechia, purpura, and bleeding from the mucosa and gastrointestinal tract.

Example 1: A patient presents with fever, chills, headache, muscle aches, and jaundice after returning from a trip to Brazil. A PCR test confirms the diagnosis of urban yellow fever., A patient living in a densely populated city in Africa develops fever, vomiting, and bleeding. Upon examination, petechiae and purpura are observed. The patient is diagnosed with urban yellow fever., A patient with a history of travel to an urban area with a known yellow fever outbreak experiences mild fever and fatigue. Blood tests reveal a reduced platelet count. The provider diagnoses urban yellow fever and recommends supportive care.

Documentation should include history of travel or exposure, symptoms, physical exam findings, and laboratory test results (CBC, coagulation studies, PCR, ELISA).

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