B81.4 ICD-10-CM Code: Mixed intestinal helminthiases
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) / Helminthiases (B65-B83)
B81.4
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceMixed intestinal helminthiases
An infection caused by multiple types of parasitic worms living in the intestines at the same time.
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
Basket needed
Code Book Path
Inclusion Terms
Official- Infection due to intestinal helminths classified to more than one of the categories B65.0-B81.3 and B81.8
- Mixed helminthiasis NOS
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for B81.4 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for B81.4 in this effective period.
Excludes 1
Official- angiostrongyliasis due to:
- Angiostrongylus cantonensis (B83.2)
- Parastrongylus cantonensis (B83.2)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for B81.4 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for B81.4 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for B81.4 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 B81.4 an HCC code?
No. B81.4 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
B81.4 is the ICD-10-CM diagnosis code for mixed intestinal helminthiases. An infection caused by multiple types of parasitic worms living in the intestines at the same time. B81.4 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering helminthiases (b65-b83).
B81.4 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.
Document which specific worm types are present when possible to support medical necessity.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for B81.4 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document which specific worm types are present when possible to support medical necessity
- •This code indicates concurrent infections, so verify that multiple helminth types are confirmed before coding