Current
A91 — Dengue hemorrhagic fever
Part of Chapter 1: Certain infectious and parasitic diseases , block Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99) .
Child Codes
A91 has no child codes in the FY 2027 release -- it is used on its own.
Referenced By
Official notes on these codes cite A91.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS