Home > 2015 ICD-9-CM Diagnosis Codes > Infectious And Parasitic Diseases 001-139 > Helminthiases 120-129 > Other trematode infections 121-
Specific code 2015 ICD-9-CM Diagnosis Code 121.1
Clonorchiasis
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 121.1 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 121.1 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 121.1 converts directly to:
  • 2015/16 ICD-10-CM B66.1 Clonorchiasis
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)
Applies To
  • Biliary cirrhosis due to clonorchiasis
  • Chinese liver fluke disease
  • Hepatic distomiasis due to Clonorchis sinensis
  • Oriental liver fluke disease
ICD-9-CM Volume 2 Index entries containing back-references to 121.1:
  • Cholangiohepatitis 575.8
    • due to fluke infestation 121.1
  • Cirrhosis, cirrhotic 571.5
    • biliary (cholangiolitic) (cholangitic) (cholestatic) (extrahepatic) (hypertrophic) (intrahepatic) (nonobstructive) (obstructive) (pericholangiolitic) (posthepatic) (primary) (secondary) (xanthomatous) 571.6
      • due to
        • clonorchiasis 121.1
        • flukes 121.3
  • Clonorchiasis 121.1
  • Clonorchiosis 121.1
  • Clonorchis infection, liver 121.1
  • Disease, diseased - see also Syndrome
    • Chinese liver fluke 121.1
    • Oriental liver fluke 121.1
  • Distomiasis 121.9
    • bile passages 121.3
      • due to Clonorchis sinensis 121.1
    • hepatic (liver) 121.3
      • due to Clonorchis sinensis (clonorchiasis) 121.1
    • liver 121.3
      • due to Clonorchis sinensis 121.1
  • Fibrosis, fibrotic
    • biliary 576.8
      • due to Clonorchis sinensis 121.1
    • hepatic - see also Cirrhosis, liver
      • due to Clonorchis sinensis 121.1
  • Hepatomegaly (see also Hypertrophy, liver) 789.1
    • due to Clonorchis sinensis 121.1
  • Infection, infected, infective (opportunistic) 136.9
    • Clonorchis (sinensis) (liver) 121.1
  • Infestation 134.9
    • Clonorchis (sinensis) (liver) 121.1
 121.0 ICD9Data.com 121.2 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 121.1 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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