B66: Other fluke infections
Codes under B66 (Other fluke infections). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| B66.0 | Opisthorchiasis | ✓ |
| B66.0 | Opisthorchiasis | ✓ |
| B66.1 | Clonorchiasis | ✓ |
| B66.1 | Clonorchiasis | ✓ |
| B66.2 | Dicroceliasis | ✓ |
| B66.2 | Dicroceliasis | ✓ |
| B66.3 | Fascioliasis | ✓ |
| B66.3 | Fascioliasis | ✓ |
| B66.4 | Paragonimiasis | ✓ |
| B66.4 | Paragonimiasis | ✓ |
| B66.5 | Fasciolopsiasis | ✓ |
| B66.5 | Fasciolopsiasis | ✓ |
| B66.8 | Other specified fluke infections | ✓ |
| B66.8 | Other specified fluke infections | ✓ |
| B66.9 | Fluke infection, unspecified | ✓ |
| B66.9 | Fluke infection, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code B66?
B66 is an ICD-10-CM category covering Other fluke infections. It contains 16 more specific diagnosis codes, 16 of which are billable.
Is B66 a billable code?
No — B66 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example B66.0 — Opisthorchiasis). 16 of the 16 codes under B66 are billable.
What codes fall under B66?
B66 includes B66.0, B66.0, B66.1, B66.1, B66.2, plus 11 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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