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ICD-10 Guide
ICD-10 CodesC57.00

C57.00

Billable

Malignant neoplasm of unspecified fallopian tube

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

Code Description

ICD-10 C57.00 is a billable code used to indicate a diagnosis of malignant neoplasm of unspecified fallopian tube.

Key Diagnostic Point:

Malignant neoplasm of the fallopian tube is a rare gynecologic cancer that arises from the epithelial cells lining the fallopian tubes. This neoplasm can be classified as primary or secondary, with primary tumors originating in the fallopian tubes and secondary tumors resulting from metastasis from other sites, such as the ovaries or uterus. Symptoms may include abdominal pain, abnormal vaginal bleeding, and pelvic mass. Diagnosis typically involves imaging studies, such as ultrasound or CT scans, and histopathological examination following surgical intervention. The staging of fallopian tube cancer is crucial for determining treatment options and prognosis, with staging typically following the FIGO (International Federation of Gynecology and Obstetrics) system. CA-125, a tumor marker, is often elevated in patients with fallopian tube malignancies and can be used to monitor treatment response and disease recurrence. Surgical approaches may include salpingo-oophorectomy, hysterectomy, and debulking procedures, often accompanied by chemotherapy depending on the stage of the disease.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in documentation of tumor origin (primary vs. metastatic)
  • Need for precise staging information
  • Potential for overlapping symptoms with other gynecologic cancers
  • Interpretation of imaging and pathology reports

Audit Risk Factors

  • Inadequate documentation of staging
  • Misclassification of tumor type
  • Failure to document CA-125 levels
  • Lack of clear surgical intervention details

Specialty Focus

Medical Specialties

Gynecologic Oncology

Documentation Requirements

Detailed pathology reports, imaging studies, surgical notes, and CA-125 levels.

Common Clinical Scenarios

Diagnosis and treatment planning for patients presenting with pelvic masses or abnormal bleeding.

Billing Considerations

Ensure accurate staging and differentiation from other gynecologic cancers.

Radiology

Documentation Requirements

Comprehensive imaging reports detailing findings related to the fallopian tubes.

Common Clinical Scenarios

Imaging for suspected malignancies or follow-up of known tumors.

Billing Considerations

Clear communication of imaging findings to assist in accurate coding.

Coding Guidelines

Inclusion Criteria

Use C57.00 When
  • Follow ICD
  • CM coding guidelines for neoplasms, ensuring accurate documentation of the site, type, and behavior of the tumor
  • Include staging information and any relevant diagnostic tests

Exclusion Criteria

Do NOT use C57.00 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

58661CPT Code

Laparoscopic salpingo-oophorectomy

Clinical Scenario

Used for surgical intervention in cases of fallopian tube malignancy.

Documentation Requirements

Operative report detailing the procedure and findings.

Specialty Considerations

Ensure accurate coding based on surgical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of gynecologic malignancies, including fallopian tube cancers, improving data accuracy and facilitating better patient management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of gynecologic malignancies, including fallopian tube cancers, improving data accuracy and facilitating better patient management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of gynecologic malignancies, including fallopian tube cancers, improving data accuracy and facilitating better patient management.

Resources

Clinical References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Coding & Billing References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Frequently Asked Questions

What are the common symptoms of malignant neoplasm of the fallopian tube?

Common symptoms include abdominal pain, abnormal vaginal bleeding, and pelvic mass. Patients may also present with nonspecific gastrointestinal symptoms.