ICD-10 Code A91 – Dengue hemorrhagic fever (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A91 – Dengue hemorrhagic fever
What it is
A91 identifies dengue hemorrhagic fever, a severe dengue infection with bleeding tendency and plasma leakage. Use it when the documentation specifically states dengue hemorrhagic fever.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include fever, bleeding manifestations, and signs of vascular leakage or shock in severe cases.
When to use this code
Use A91 when the provider documents dengue hemorrhagic fever, dengue hemorrhagic disease, or severe dengue with hemorrhagic features. It applies when the diagnosis is established in the record, not merely suspected. Check documentation if the note only says dengue.
Do not use for
Do not use A91 for uncomplicated dengue fever or other viral fevers without hemorrhagic features. If the record does not clearly support hemorrhagic dengue, choose the documented diagnosis instead.
Coding tip
Verify that the chart distinguishes hemorrhagic dengue from standard dengue before assigning A91.