Other fluke infections
In Helminthiases (B65-B83), chapter 1: Certain Infectious and Parasitic Diseases
8 billable codes under B66: 7 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Rules for coding infections and parasitic diseases, including HIV, organism and drug resistance codes, sepsis and septic shock, MRSA, Zika, and COVID-19.
- Human Immunodeficiency Virus (HIV) Infections (page 19)
- Infectious agents as the cause of diseases classified to other chapters (page 22)
- Infections resistant to antibiotics (page 22)
- Sepsis, Severe Sepsis, and Septic Shock (page 23)
- Methicillin Resistant Staphylococcus aureus (MRSA) Conditions (page 27)
- Zika virus infections (page 28)
- Coronavirus infections (page 28)
All codes under B66
B66 can't be used on a claim. Pick a billable code below; grey headings group them.
B66 MS-DRGs
As the principal diagnosis, the billable codes under B66 group to these 9 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 441 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with MCC (4 of 8 codes)
- DRG 442 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis with CC (4 of 8 codes)
- DRG 443 Disorders of Liver Except Malignancy, Cirrhosis or Alcoholic Hepatitis without CC/MCC (4 of 8 codes)
- DRG 867 Other Infectious and Parasitic Diseases Diagnoses with MCC (3 of 8 codes)
- DRG 868 Other Infectious and Parasitic Diseases Diagnoses with CC (3 of 8 codes)
- DRG 869 Other Infectious and Parasitic Diseases Diagnoses without CC/MCC (3 of 8 codes)
- DRG 177 Respiratory Infections and Inflammations with MCC (1 of 8 codes)
- DRG 178 Respiratory Infections and Inflammations with CC (1 of 8 codes)
- DRG 179 Respiratory Infections and Inflammations without CC/MCC (1 of 8 codes)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Parasitic Diseases
Parasites are living things that use other living things - like your body - for food and a place to live. You can get them from contaminated food or water, a bug bite, or sexual contact. Some parasitic diseases are easily treated and some are not.
Read more about parasitic diseases on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.