B76.9 ICD-10-CM Code: Hookworm disease, unspecified
HCC Buddy Code Card
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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Helminthiases (B65-B83)
B76.9
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceHookworm disease, unspecified
Hookworm disease is a parasitic infection caused by hookworms that attach to the small intestine and feed on blood, potentially causing anemia and malnutrition. This code is used when the specific type of hookworm cannot be determined or is not documented.
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
Official- Cutaneous larva migrans NOS
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for B76.9 in this effective period.
Related Child Codes
Includes
Official- uncinariasis
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for B76.9 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for B76.9 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for B76.9 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for B76.9 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 B76.9 an HCC code?
No. B76.9 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
B76.9 is the ICD-10-CM diagnosis code for hookworm disease, unspecified. Hookworm disease is a parasitic infection caused by hookworms that attach to the small intestine and feed on blood, potentially causing anemia and malnutrition. This code is used when the specific type of hookworm cannot be determined or is not documented. B76.9 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering helminthiases (b65-b83).
B76.9 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.
If the specific hookworm species is identified (such as Necator americanus or Ancylostoma duodenale), use the more specific codes B76.0 or B76.1 instead of B76.9.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for B76.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •If the specific hookworm species is identified (such as Necator americanus or Ancylostoma duodenale), use the more specific codes B76.0 or B76.1 instead of B76.9
- •Document any associated complications like anemia (D50.9) or malnutrition (E40-E46) separately, as these are common sequelae of hookworm infection