ICD-10 Code A98.0 – Crimean-Congo Hemorrhagic Fever (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A98.0 – Crimean-Congo hemorrhagic fever
What it is
A98.0 identifies Crimean-Congo hemorrhagic fever, a severe viral hemorrhagic illness caused by infection with Crimean-Congo hemorrhagic fever virus. Use this code for confirmed or documented cases of this specific disease.
Clinical signs
Typical findings include sudden fever, headache, muscle pain, and marked weakness, followed by bleeding manifestations in some patients. Clinical features vary; refer to documentation.
When to use this code
Use A98.0 when the record clearly states Crimean-Congo hemorrhagic fever, CCHF, or the full viral diagnosis. Apply it for confirmed cases, suspected cases only if your coding rules allow, and when the clinician documents this infection as the reason for care.
Do not use for
Do not use this code for nonspecific viral fever, other hemorrhagic fevers, or routine fever workups without documentation of CCHF. Check documentation if the chart names a different arboviral or viral hemorrhagic illness.
Coding tip
Confirm the exact disease name in the assessment or discharge diagnosis before assigning A98.0.