ICD-10 code for liver distomiasis

The ICD-10-CM code for liver distomiasis is B66.3 (Fascioliasis). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on B66.3.

Within B66 (other fluke infections), B66.3 is specifically for Fascioliasis. Related codes cover Opisthorchiasis (B66.0), Clonorchiasis (B66.1), Dicroceliasis (B66.2), Paragonimiasis (B66.4), Fasciolopsiasis (B66.5), other specified fluke infections (B66.8) and fluke infection, unspecified (B66.9).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 441 (Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC, relative weight 1.8219), DRG 442 (Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC, relative weight 0.9602) and DRG 443 (Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC, relative weight 0.6885), in MDC 07 (Diseases and Disorders of the Hepatobiliary System and Pancreas), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.