B17.8 ICD-10-CM Code: Other specified acute viral hepatitis
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Viral hepatitis (B15-B19)
B17.8
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceOther specified acute viral hepatitis
A sudden viral liver infection caused by a hepatitis virus other than A, B, C, D, or E.
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- Hepatitis non-A non-B (acute) (viral) NEC
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for B17.8 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for B17.8 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for B17.8 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for B17.8 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for B17.8 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for B17.8 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 B17.8 an HCC code?
No. B17.8 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
Get the V28 RAF + MEAT cheat sheet
One printable page: confirm a code's V28 HCC status, its RAF weight, and the MEAT your note needs to make it stick. Free, no card.
Free PDF. No card. Unsubscribe anytime.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
B17.8 is the ICD-10-CM diagnosis code for other specified acute viral hepatitis. A sudden viral liver infection caused by a hepatitis virus other than A, B, C, D, or E. B17.8 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering viral hepatitis (b15-b19).
B17.8 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 hepatitis virus type is identified but does not fit other acute hepatitis categories.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for B17.8 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 hepatitis virus type is identified but does not fit other acute hepatitis categories
- •Document the specific virus type in the medical record for clarity