B66.8 Other specified fluke infections

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Echinostomiasis
• Heterophyiasis
• Metagonimiasis
• Nanophyetiasis
• Watsoniasis

MS-DRG index

Defines the logic of DRG(s) 867-869 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 121.5 Metagonimiasis (approximate)
• 121.6 Heterophyiasis (approximate)
• 121.8 Other specified trematode infections (approximate)

Code annotations containing back-references to B66.8

Back-references to B66

• Code First: H94.0 Acoustic neuritis in infectious and parasitic diseases classified elsewhere ("parasitic disease (B65-B89)")
• Type 2 Excludes: J82 Pulmonary eosinophilia, not elsewhere classified ("pulmonary eosinophilia due to specified parasitic infection (B50-B83)")

Diagnosis Index entries for B66.8

• Echinostomiasis
• Gastrodisciasis, gastrodiscoidiasis
• Heterophyes, heterophyiasis (small intestine)
• Infection, infected, infective (opportunistic) › Heterophyes (heterophyes)
• Infection, infected, infective (opportunistic) › Metagonimus
• Infection, infected, infective (opportunistic) › Stellantchasmus falcatus
• Infestation › Echinostomum ilocanum
• Infestation › fluke › specified type NEC
• Infestation › Gastrodiscoides hominis
• Infestation › Heterophyes (heterophyes)
• Infestation › Metagonimus (yokogawai)
• Infestation › Stellantchasmus falcatus
• Metagonimiasis
• Metagonimus infestation (intestine)
• Nanophyetiasis
• Watsoniasis

Nearby codes

• B66.1 Clonorchiasis
• B66.2 Dicroceliasis
• B66.3 Fascioliasis
• B66.4 Paragonimiasis
• B66.5 Fasciolopsiasis
• B66.8 Other specified fluke infections (this code)
• B66.9 Fluke infection, unspecified