ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesB66

B66

Echinococcosis

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 B66 is a billable code used to indicate a diagnosis of echinococcosis.

Key Diagnostic Point:

Echinococcosis is a parasitic infection caused by tapeworms of the genus Echinococcus, primarily Echinococcus granulosus and Echinococcus multilocularis. The disease is characterized by the formation of cysts in various organs, most commonly the liver and lungs, leading to significant morbidity. Humans typically become infected through the ingestion of eggs found in contaminated food, water, or soil, often associated with contact with infected dogs or livestock. The cysts can grow slowly and may remain asymptomatic for years, but as they enlarge, they can cause symptoms such as abdominal pain, nausea, vomiting, and respiratory issues depending on their location. Diagnosis is often made through imaging studies such as ultrasound, CT scans, or MRI, alongside serological tests. Treatment usually involves surgical intervention to remove the cysts, and antiparasitic medications like albendazole or mebendazole may be used as adjunct therapy to prevent recurrence. The management of echinococcosis requires a multidisciplinary approach, including infectious disease specialists, surgeons, and radiologists.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of clinical presentations depending on cyst location.
  • Need for imaging studies to confirm diagnosis.
  • Potential for co-infections or complications.
  • Variability in treatment approaches (surgical vs. medical).

Audit Risk Factors

  • Inadequate documentation of imaging studies.
  • Failure to document the location and size of cysts.
  • Misclassification of cyst type (e.g., hydatid vs. non-hydatid).
  • Lack of follow-up documentation post-treatment.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed history of exposure, diagnostic imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with abdominal pain and imaging findings suggestive of cystic lesions.

Billing Considerations

Ensure clarity on the type of echinococcosis and any co-existing infections.

Surgery

Documentation Requirements

Operative reports detailing cyst removal and any complications encountered.

Common Clinical Scenarios

Surgical intervention for large cysts causing symptoms or complications.

Billing Considerations

Document the surgical approach and any adjunctive treatments provided.

Coding Guidelines

Inclusion Criteria

Use B66 When
  • Follow the official ICD
  • CM coding guidelines for parasitic infections
  • Include specific details about the cyst location and any complications
  • Ensure to use additional codes for associated conditions as necessary

Exclusion Criteria

Do NOT use B66 When
No specific exclusions found.

Related Codes

Child Codes

8 codes
B66.0
Echinococcosis due to Echinococcus granulosus
B66.1
Echinococcus granulosus infection of liver
B66.2
Echinococcus granulosus infection of liver
B66.3
Echinococcus granulosus infection of liver
B66.4
Echinococcus granulosus infection of liver
B66.5
Schistosomiasis due to Schistosoma mekongi
B66.8
Other specified cestodes
B66.9
Echinococcosis, unspecified

Related CPT Codes

47562CPT Code

Laparoscopic cholecystectomy

Clinical Scenario

Used when cysts are located in the liver and require surgical intervention.

Documentation Requirements

Operative report detailing the procedure and findings.

Specialty Considerations

Ensure the diagnosis of echinococcosis is clearly linked to the surgical procedure.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of echinococcosis, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of disease prevalence and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of echinococcosis, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of disease prevalence and treatment outcomes.

Reimbursement & Billing Impact

reimbursement processes. It has also facilitated better tracking of disease prevalence and treatment outcomes.

Resources

Clinical References

  • •
    CDC Echinococcosis Information

Coding & Billing References

  • •
    CDC Echinococcosis Information

Frequently Asked Questions

What are the common symptoms of echinococcosis?

Common symptoms include abdominal pain, nausea, vomiting, and respiratory issues, depending on the location of the cysts.

How is echinococcosis diagnosed?

Diagnosis is typically made through imaging studies such as ultrasound or CT scans, along with serological tests.

What treatments are available for echinococcosis?

Treatment may involve surgical removal of cysts and antiparasitic medications like albendazole.