A96.9 ICD-10-CM Code: Arenaviral hemorrhagic fever, unspecified
HCC Buddy Code Card
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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)
A96.9
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceArenaviral hemorrhagic fever, unspecified
A serious viral infection that causes bleeding and hemorrhage throughout the body, but the specific type of arenavirus responsible has not been identified. This is a rare and potentially life-threatening condition that requires immediate medical attention.
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
OfficialICD-10-CM does not list inclusion terms for A96.9 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for A96.9 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for A96.9 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for A96.9 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for A96.9 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for A96.9 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for A96.9 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 A96.9 an HCC code?
No. A96.9 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
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
A96.9 is the ICD-10-CM diagnosis code for arenaviral hemorrhagic fever, unspecified. A serious viral infection that causes bleeding and hemorrhage throughout the body, but the specific type of arenavirus responsible has not been identified. This is a rare and potentially life-threatening condition that requires immediate medical attention. A96.9 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).
A96.9 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 arenaviral hemorrhagic fever type (such as Lassa fever, Junín virus, or Machupo virus) cannot be determined or is not documented; query the provider if more specific information is available.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A96.9 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 arenaviral hemorrhagic fever type (such as Lassa fever, Junín virus, or Machupo virus) cannot be determined or is not documented; query the provider if more specific information is available
- •This code indicates an unspecified diagnosis, so document any available clinical findings (bleeding manifestations, geographic exposure, or test results) to support medical necessity and consider whether additional specificity can be obtained