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 CodesC66.1

C66.1

Billable

Malignant neoplasm of right ureter

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

Code Description

ICD-10 C66.1 is a billable code used to indicate a diagnosis of malignant neoplasm of right ureter.

Key Diagnostic Point:

C66.1 refers to a malignant neoplasm located in the right ureter, which is part of the urinary tract responsible for transporting urine from the kidney to the bladder. This type of cancer can arise from the epithelial cells lining the ureter and may present with symptoms such as hematuria (blood in urine), flank pain, or urinary obstruction. Diagnosis typically involves imaging studies such as CT scans or MRIs, and may be confirmed through biopsy. Staging of the cancer is crucial for determining the appropriate treatment plan and involves assessing the tumor size, lymph node involvement, and presence of metastasis. Surgical management often includes ureterectomy, where the affected segment of the ureter is removed, and may be accompanied by lymphadenectomy if lymph nodes are involved. Adjuvant therapies, such as chemotherapy or radiation, may also be considered based on the stage and grade of the tumor. Accurate coding is essential for proper treatment reimbursement and tracking of cancer statistics.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of urinary tract anatomy and cancer staging.
  • Differentiation from benign conditions and other malignancies.
  • Need for precise documentation of tumor characteristics.
  • Potential for multiple treatment modalities affecting coding.

Audit Risk Factors

  • Inadequate documentation of tumor staging.
  • Failure to document surgical procedures performed.
  • Misclassification of tumor type or location.
  • Lack of follow-up documentation post-treatment.

Specialty Focus

Medical Specialties

Urology

Documentation Requirements

Detailed operative reports, pathology reports, and imaging studies.

Common Clinical Scenarios

Diagnosis and management of ureteral tumors, post-operative follow-up, and complications.

Billing Considerations

Ensure accurate staging and documentation of any adjuvant therapies.

Oncology

Documentation Requirements

Comprehensive treatment plans, chemotherapy administration records, and follow-up assessments.

Common Clinical Scenarios

Management of metastatic disease, coordination of multi-disciplinary care, and palliative care considerations.

Billing Considerations

Document all treatment modalities and response to therapy for accurate coding.

Coding Guidelines

Inclusion Criteria

Use C66.1 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the tumor's location, size, and staging
  • Include any relevant surgical procedures and treatments in the medical record to support the coding

Exclusion Criteria

Do NOT use C66.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

50590CPT Code

Ureterectomy, unilateral

Clinical Scenario

Used when performing a surgical resection of the right ureter due to malignancy.

Documentation Requirements

Operative report detailing the procedure and findings.

Specialty Considerations

Urology specialists should ensure all surgical details are documented for accurate coding.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of urinary tract malignancies, improving the granularity of data for treatment outcomes and epidemiological studies. C66.1 provides a clear distinction for malignant neoplasms of the right ureter, enhancing the accuracy of health records.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of urinary tract malignancies, improving the granularity of data for treatment outcomes and epidemiological studies. C66.1 provides a clear distinction for malignant neoplasms of the right ureter, enhancing the accuracy of health records.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of urinary tract malignancies, improving the granularity of data for treatment outcomes and epidemiological studies. C66.1 provides a clear distinction for malignant neoplasms of the right ureter, enhancing the accuracy of health records.

Resources

Clinical References

  • •
    American Urological Association Guidelines

Coding & Billing References

  • •
    American Urological Association Guidelines

Frequently Asked Questions

What are the common symptoms of malignant neoplasm of the ureter?

Common symptoms include hematuria, flank pain, and urinary obstruction. Patients may also experience changes in urinary habits.

How is malignant neoplasm of the ureter diagnosed?

Diagnosis typically involves imaging studies such as CT scans or MRIs, followed by biopsy to confirm malignancy.

What is the typical treatment for malignant neoplasm of the ureter?

Treatment often involves surgical resection of the affected ureter segment, with possible adjuvant chemotherapy or radiation therapy depending on staging.