ICD-10-CM Code For Schistosomiasis Bilharziasis: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group B65 includes infections caused by Schistosoma species, covering intestinal, hepatic, urinary, and other organ manifestations of schistosomiasis and related chronic complications. These ICD-10-CM diagnosis codes are used to document acute infection, chronic disease states, organ-specific involvement, and complications such as portal hypertension or genitourinary damage. Accurate coding within the ICD-10-CM B65 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM B65: Schistosomiasis [bilharziasis] Overview

The ICD-10-CM B65 group represents infections caused by blood flukes (Schistosoma species) that primarily affect the genitourinary and hepatointestinal systems. These diagnoses capture acute and chronic manifestations including intestinal, hepatic, urinary, and other organ involvement. Accurate coding is important for complete clinical documentation and can affect reimbursement through correct representation of disease severity and complications.

When to Use

Use a code from this group when documentation identifies schistosomiasis as the diagnosis, specifies the Schistosoma species or describes organ-specific involvement or complications. Choose the code that best reflects the acute or chronic nature of the infection and any documented complications such as portal hypertension or urinary tract damage.

ICD-10-CM Codes

6 rows

ICD-10-CM Code	Description
B65.0	Schistosomiasis due to Schistosoma haematobium [urinary schistosomiasis]
B65.1	Schistosomiasis due to Schistosoma mansoni [intestinal schistosomiasis]
B65.2	Schistosomiasis due to Schistosoma japonicum
B65.3	Cercarial dermatitis
B65.8	Other schistosomiasis
B65.9	Schistosomiasis, unspecified

DRG Codes

10 rows

DRG Code	Description
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
606	Minor Skin Disorders with MCC
607	Minor Skin Disorders without MCC
689	Kidney and Urinary Tract Infections with MCC
690	Kidney and Urinary Tract Infections without MCC
867	Other Infectious and Parasitic Diseases Diagnoses with MCC
868	Other Infectious and Parasitic Diseases Diagnoses with CC
869	Other Infectious and Parasitic Diseases Diagnoses without CC/MCC

Typical Clinical Scenarios

A young adult who recently returned from freshwater bathing in sub-Saharan Africa presents to the emergency department with acute onset fever, cough, and diffuse urticarial rash; labs show eosinophilia and a positive serologic test for Schistosoma species consistent with acute invasive infection (Katayama fever). A diagnosis from this group is assigned to capture the acute schistosomal infection during initial systemic symptoms. Typical codes: B65.0, B65.1
A middle-aged patient with a history of prior exposure in endemic regions presents to outpatient clinic with chronic abdominal pain, intermittent diarrhea, hepatosplenomegaly on exam, and imaging showing periportal fibrosis suggesting chronic hepatosplenic schistosomiasis causing portal hypertension. A diagnosis from this group is assigned to document chronic, organ-specific sequelae of schistosomal infestation. Typical codes: B65.2, B65.3
An older patient admitted for evaluation of new-onset urinary tract hematuria and bladder wall lesions on cystoscopy, with biopsy confirming schistosomal ova and associated granulomatous inflammation; the condition complicates management of concurrent urinary tract infections and hematuria. A diagnosis from this group is assigned to identify urinary schistosomiasis as the underlying parasitic etiology contributing to genitourinary complications. Typical codes: B65.8, B65.9

Related Codes

B66-OTHER-FLUKE-INFECTIONS

ICD-10-CM Code For Other Fluke Infections: Group Overview

B67-ECHINOCOCCOSIS

ICD-10-CM Code For Echinococcosis: Group Overview

B68-TAENIASIS

ICD-10-CM Code For Taeniasis: Group Overview

B69-CYSTICERCOSIS

ICD-10-CM Code For Cysticercosis: Group Overview

B70-DIPHYLLOBOTHRIASIS-AND-SPARGANOSIS

ICD-10-CM Code For Diphyllobothriasis And Sparganosis: Group Overview

B71-OTHER-CESTODE-INFECTIONS

ICD-10-CM Code For Other Cestode Infections: Group Overview

B72-DRACUNCULIASIS

ICD-10-CM Code For Dracunculiasis: Group Overview

B73-ONCHOCERCIASIS

ICD-10-CM Code For Onchocerciasis: Group Overview

B74-FILARIASIS-AND-FILARIAL-INFECTIONS

ICD-10-CM Code For Filariasis: Group Overview

B75-TRICHINELLOSIS

ICD-10-CM Code For Trichinellosis: Group Overview

Showing 1–10 of 18

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

6 rows

ICD-10-CM Code	Description
B65.0	Schistosomiasis due to Schistosoma haematobium [urinary schistosomiasis]
B65.1	Schistosomiasis due to Schistosoma mansoni [intestinal schistosomiasis]
B65.2	Schistosomiasis due to Schistosoma japonicum
B65.3	Cercarial dermatitis
B65.8	Other schistosomiasis
B65.9	Schistosomiasis, unspecified

DRG Codes

10 rows

DRG Code	Description
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
606	Minor Skin Disorders with MCC
607	Minor Skin Disorders without MCC
689	Kidney and Urinary Tract Infections with MCC
690	Kidney and Urinary Tract Infections without MCC
867	Other Infectious and Parasitic Diseases Diagnoses with MCC
868	Other Infectious and Parasitic Diseases Diagnoses with CC
869	Other Infectious and Parasitic Diseases Diagnoses without CC/MCC

Typical Clinical Scenarios

A young adult who recently returned from freshwater bathing in sub-Saharan Africa presents to the emergency department with acute onset fever, cough, and diffuse urticarial rash; labs show eosinophilia and a positive serologic test for Schistosoma species consistent with acute invasive infection (Katayama fever). A diagnosis from this group is assigned to capture the acute schistosomal infection during initial systemic symptoms. Typical codes: B65.0, B65.1
A middle-aged patient with a history of prior exposure in endemic regions presents to outpatient clinic with chronic abdominal pain, intermittent diarrhea, hepatosplenomegaly on exam, and imaging showing periportal fibrosis suggesting chronic hepatosplenic schistosomiasis causing portal hypertension. A diagnosis from this group is assigned to document chronic, organ-specific sequelae of schistosomal infestation. Typical codes: B65.2, B65.3
An older patient admitted for evaluation of new-onset urinary tract hematuria and bladder wall lesions on cystoscopy, with biopsy confirming schistosomal ova and associated granulomatous inflammation; the condition complicates management of concurrent urinary tract infections and hematuria. A diagnosis from this group is assigned to identify urinary schistosomiasis as the underlying parasitic etiology contributing to genitourinary complications. Typical codes: B65.8, B65.9

Related Codes

B66-OTHER-FLUKE-INFECTIONS

ICD-10-CM Code For Other Fluke Infections: Group Overview

B67-ECHINOCOCCOSIS

ICD-10-CM Code For Echinococcosis: Group Overview

B68-TAENIASIS

ICD-10-CM Code For Taeniasis: Group Overview

B69-CYSTICERCOSIS

ICD-10-CM Code For Cysticercosis: Group Overview

B70-DIPHYLLOBOTHRIASIS-AND-SPARGANOSIS

ICD-10-CM Code For Diphyllobothriasis And Sparganosis: Group Overview

B71-OTHER-CESTODE-INFECTIONS

ICD-10-CM Code For Other Cestode Infections: Group Overview

B72-DRACUNCULIASIS

ICD-10-CM Code For Dracunculiasis: Group Overview

B73-ONCHOCERCIASIS

ICD-10-CM Code For Onchocerciasis: Group Overview

B74-FILARIASIS-AND-FILARIAL-INFECTIONS

ICD-10-CM Code For Filariasis: Group Overview

B75-TRICHINELLOSIS

ICD-10-CM Code For Trichinellosis: Group Overview

Showing 1–10 of 18

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Schistosomiasis Bilharziasis: Group Overview

Sign up for ICD-10-CM Code For Schistosomiasis Bilharziasis: Group Overview policy alerts

ICD-10-CM B65: Schistosomiasis [bilharziasis] Overview

ICD-10-CM Code For Schistosomiasis Bilharziasis: Group Overview

Sign up for ICD-10-CM Code For Schistosomiasis Bilharziasis: Group Overview policy alerts

ICD-10-CM B65: Schistosomiasis [bilharziasis] Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM codes are included in the B65 schistosomiasis group?

What types of clinical manifestations are captured by ICD-10-CM B65 codes?

How can accurate coding within the B65 group affect reimbursement?

Which related DRGs may be relevant when coding schistosomiasis cases?

When should a coder choose an unspecified B65 code versus a specific species code?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM codes are included in the B65 schistosomiasis group?

What types of clinical manifestations are captured by ICD-10-CM B65 codes?

How can accurate coding within the B65 group affect reimbursement?

Which related DRGs may be relevant when coding schistosomiasis cases?

When should a coder choose an unspecified B65 code versus a specific species code?

References