Dengue fever [classical dengue] (A90) ICD-10-CM
The A90 code range covers dengue fever [classical dengue] with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- dengue hemorrhagic fever A91
Codes in the A90 Range 1 codes · 1 billable
- A90 Dengue fever [classical dengue]
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A90 range.
Dengue
An acute febrile disease transmitted by the bite of AEDES mosquitoes infected with DENGUE VIRUS. It is self-limiting and characterized by fever, myalgia, headache, and rash. SEVERE DENGUE is a more virulent form of dengue.
Dengue Vaccines
Vaccines or candidate vaccines used to prevent infection with DENGUE VIRUS. These include live-attenuated, subunit, DNA, and inactivated vaccines.
Dengue Virus
A species of the genus FLAVIVIRUS which causes an acute febrile and sometimes hemorrhagic disease in man. Dengue is mosquito-borne and four serotypes are known.
Flavivirus
A genus of FLAVIVIRIDAE containing several subgroups and many species. Most are arboviruses transmitted by mosquitoes or ticks. The type species is YELLOW FEVER VIRUS.
Severe Dengue
A virulent form of dengue characterized by THROMBOCYTOPENIA and an increase in vascular permeability (grades I and II) and distinguished by a positive pain test (e.g., TOURNIQUET PAIN TEST). When accompanied by SHOCK (grades III and IV), it is called dengue shock syndrome.
About the A90 Code Range
The ICD-10 code A90 is used to classify dengue fever, commonly known as classical dengue, a viral infection transmitted by mosquitoes. This code specifically captures cases of dengue without complications or additional warning signs.
Dengue fever, often referred to simply as Dengue or recognized in related terms like dengue virus encephalitis and myelitis caused by Dengue virus, represents an acute febrile illness caused by the dengue virus. The ICD-10 code A90 helps medical coders and healthcare professionals document and report this infection accurately. Utilizing this code distinguishes uncomplicated dengue cases from more severe forms, ensuring precise classification in patient records and statistical data. For those searching for the ICD-10 code for dengue fever, A90 clearly identifies classical dengue without warning signs, facilitating better diagnosis tracking and treatment planning.
Questions About This Page
How many billable codes are in the A90 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the A90 range classify?
The range classifies dengue fever [classical dengue]. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
