A08.8 ICD-10-CM Code: Other specified intestinal infections
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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Intestinal infectious diseases (A00-A09)
A08.8
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceOther specified intestinal infections
This code represents intestinal infections caused by organisms other than the common ones like rotavirus, norovirus, or bacterial pathogens. It's used when the specific causative agent is identified but doesn't fit into the more common intestinal infection categories.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for A08.8 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for A08.8 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for A08.8 in this effective period.
Excludes 1
Official- influenza with involvement of gastrointestinal tract (J09.X3, J10.2, J11.2)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for A08.8 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for A08.8 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for A08.8 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 A08.8 an HCC code?
No. A08.8 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A08.8 is the ICD-10-CM diagnosis code for other specified intestinal infections. This code represents intestinal infections caused by organisms other than the common ones like rotavirus, norovirus, or bacterial pathogens. It's used when the specific causative agent is identified but doesn't fit into the more common intestinal infection categories. A08.8 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering intestinal infectious diseases (a00-a09).
A08.8 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.
Always review the documentation to identify the specific organism causing the intestinal infection, as more specific codes may be available and should be used instead of this 'other specified' code.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A08.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Always review the documentation to identify the specific organism causing the intestinal infection, as more specific codes may be available and should be used instead of this 'other specified' code
- •This code requires documentation of the causative agent; if the organism is not specified in the medical record, query the provider for clarification before assigning this code