B60.11 ICD-10-CM Code: Meningoencephalitis due to Acanthamoeba (culbertsoni)
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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Protozoal diseases (B50-B64)
B60.11
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceMeningoencephalitis due to Acanthamoeba (culbertsoni)
A serious brain and spinal cord infection caused by Acanthamoeba culbertsoni, a microscopic organism found in water and soil that can enter the body and cause severe inflammation.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
MappedHCC 3
Varies by metal level
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 B60.11 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for B60.11 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for B60.11 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for B60.11 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for B60.11 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for B60.11 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for B60.11 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is B60.11 an HCC code?
No. B60.11 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- B60.11
- Description
- Meningoencephalitis due to Acanthamoeba (culbertsoni)
- 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
B60.11 is the ICD-10-CM diagnosis code for meningoencephalitis due to acanthamoeba (culbertsoni). A serious brain and spinal cord infection caused by Acanthamoeba culbertsoni, a microscopic organism found in water and soil that can enter the body and cause severe inflammation. B60.11 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering protozoal diseases (b50-b64).
B60.11 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.
This is a rare but serious infection; verify the specific Acanthamoeba species is documented as culbertsoni.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for B60.11 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is a rare but serious infection; verify the specific Acanthamoeba species is documented as culbertsoni
- •Often requires additional codes for neurological complications or sequelae