2024 ICD-10-CM Diagnosis Code B66.1

by

Clonorchiasis

  • B66.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM B66.1 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of B66.1 – other international versions of ICD-10 B66.1 may differ.

Applicable To

  • Chinese liver fluke disease
  • Infection due to Clonorchis sinensis
  • Oriental liver fluke disease

The following code(s) above B66.1 contain annotation back-references

 that may be applicable to B66.1:

  • A00-B99  Certain infectious and parasitic diseases

Clinical Information

  • Infection of the biliary passages with clonorchis sinensis, also called opisthorchis sinensis. It may lead to inflammation of the biliary tract, proliferation of biliary epithelium, progressive portal fibrosis, and sometimes bile duct carcinoma. Extension to the liver may lead to fatty changes and cirrhosis. (from Dorland, 27th ed)

ICD-10-CM B66.1 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 441 Disorders of liver except malignancy, cirrhosis or alcoholic hepatitis with mcc
  • 442 Disorders of liver except malignancy, cirrhosis or alcoholic hepatitis with cc
  • 443 Disorders of liver except malignancy, cirrhosis or alcoholic hepatitis without cc/mcc

Convert B66.1 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to B66.1: