A06.1 ICD-10-CM Code: Chronic intestinal amebiasis
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) / Intestinal infectious diseases (A00-A09)
A06.1
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceChronic intestinal amebiasis
A chronic infection of the intestines caused by a parasite called Entamoeba histolytica, which is typically acquired by consuming contaminated food or water. This condition causes ongoing digestive symptoms and intestinal inflammation that persists over an extended period.
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 A06.1 in this effective period.
Excludes 2
Official- acanthamebiasis (B60.1-)
- Naegleriasis (B60.2)
Related Child Codes
Includes
Official- infection due to Entamoeba histolytica
Excludes 1
Official- other protozoal intestinal diseases (A07.-)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for A06.1 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for A06.1 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for A06.1 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 A06.1 an HCC code?
No. A06.1 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- A06.1
- Description
- Chronic intestinal amebiasis
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
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
A06.1 is the ICD-10-CM diagnosis code for chronic intestinal amebiasis. A chronic infection of the intestines caused by a parasite called Entamoeba histolytica, which is typically acquired by consuming contaminated food or water. This condition causes ongoing digestive symptoms and intestinal inflammation that persists over an extended period. A06.1 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering intestinal infectious diseases (a00-a09).
A06.1 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.
Verify that the documentation specifies 'chronic' amebiasis rather than acute or unspecified forms, as this distinction is important for accurate code selection.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A06.1 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify that the documentation specifies 'chronic' amebiasis rather than acute or unspecified forms, as this distinction is important for accurate code selection
- •Ensure the infection is confirmed to be limited to the intestines; if there is evidence of extraintestinal involvement (such as liver abscess), a different code would be required