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ICD-10 Guide
ICD-10 CodesC57.22

C57.22

Billable

Malignant neoplasm of left round ligament

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

Code Description

ICD-10 C57.22 is a billable code used to indicate a diagnosis of malignant neoplasm of left round ligament.

Key Diagnostic Point:

C57.22 refers to a malignant neoplasm located in the left round ligament, which is a fibrous cord that extends from the uterus to the labia majora. This neoplasm is classified under gynecologic malignancies, which are cancers that originate in the female reproductive system. The round ligament is not a common site for malignancies, making this diagnosis relatively rare. The clinical presentation may include pelvic pain, abnormal uterine bleeding, or a palpable mass. Diagnosis typically involves imaging studies such as ultrasound or MRI, and histopathological examination following biopsy. Staging of the malignancy is crucial for determining the extent of disease and guiding treatment options. The FIGO (International Federation of Gynecology and Obstetrics) staging system is often utilized for gynecologic cancers, which includes assessments of tumor size, lymph node involvement, and distant metastasis. CA-125, a tumor marker, may be elevated in cases of ovarian and other gynecologic cancers, but its role in diagnosing round ligament neoplasms specifically is less clear. Surgical approaches may include excision of the tumor, and in some cases, a hysterectomy may be necessary depending on the extent of the disease. Multidisciplinary management involving gynecologic oncologists, radiologists, and pathologists is essential for optimal patient outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Rarity of the condition leading to potential misdiagnosis
  • Need for precise staging and documentation of tumor characteristics
  • Variability in clinical presentation and symptoms
  • Potential for co-existing gynecologic conditions

Audit Risk Factors

  • Inadequate documentation of tumor size and staging
  • Failure to document the surgical approach taken
  • Misinterpretation of imaging results
  • Lack of clarity in pathology reports

Specialty Focus

Medical Specialties

Gynecologic Oncology

Documentation Requirements

Detailed surgical notes, pathology reports, imaging studies, and staging information.

Common Clinical Scenarios

Diagnosis and management of gynecologic cancers, including staging and treatment planning.

Billing Considerations

Accurate documentation of tumor characteristics and staging is critical for treatment decisions and coding.

Radiology

Documentation Requirements

Clear imaging reports detailing findings related to the neoplasm.

Common Clinical Scenarios

Imaging studies for suspected gynecologic malignancies.

Billing Considerations

Radiologists should ensure that imaging findings correlate with clinical documentation for accurate coding.

Coding Guidelines

Inclusion Criteria

Use C57.22 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the malignancy's location, size, and staging
  • Include any relevant imaging and pathology findings to support the diagnosis

Exclusion Criteria

Do NOT use C57.22 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

58150CPT Code

Total abdominal hysterectomy

Clinical Scenario

Performed when malignancy is confirmed and extensive surgical intervention is required.

Documentation Requirements

Operative report detailing the procedure and findings.

Specialty Considerations

Gynecologic oncologists should ensure comprehensive documentation of the surgical approach.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of rare conditions like C57.22, 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 rare conditions like C57.22, improving data accuracy and facilitating better patient management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of rare conditions like C57.22, improving data accuracy and facilitating better patient management.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the significance of CA-125 in diagnosing C57.22?

CA-125 is a tumor marker often elevated in gynecologic cancers, but its role in diagnosing malignancies of the round ligament specifically is less established. It may be used as part of a broader diagnostic workup.