A93.8 ICD-10-CM Code: Other specified arthropod-borne viral fevers
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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99)
A93.8
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceOther specified arthropod-borne viral fevers
This code describes viral fevers transmitted by arthropods (insects like mosquitoes, ticks, or mites) that don't fit into other specific arthropod-borne viral fever categories. These infections cause fever and flu-like symptoms from viruses spread through insect bites.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Piry virus disease
- Vesicular stomatitis virus disease [Indiana fever]
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for A93.8 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for A93.8 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for A93.8 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for A93.8 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for A93.8 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for A93.8 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is A93.8 an HCC code?
No. A93.8 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- A93.8
- Description
- Other specified arthropod-borne viral fevers
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A93.8 is the ICD-10-CM diagnosis code for other specified arthropod-borne viral fevers. This code describes viral fevers transmitted by arthropods (insects like mosquitoes, ticks, or mites) that don't fit into other specific arthropod-borne viral fever categories. These infections cause fever and flu-like symptoms from viruses spread through insect bites. A93.8 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering arthropod-borne viral fevers and viral hemorrhagic fevers (a90-a99).
A93.8 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Use this code only when the specific arthropod-borne viral fever is documented but doesn't match more specific codes like dengue (A90), Zika (A92.5), or chikungunya (A92.0).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A93.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when the specific arthropod-borne viral fever is documented but doesn't match more specific codes like dengue (A90), Zika (A92.5), or chikungunya (A92.0)
- •Always document the type of arthropod vector and geographic location when available, as this helps identify the specific virus and supports epidemiological tracking