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ICD-10 Guide
ICD-10 CodesD19.1

D19.1

Billable

Benign neoplasm of mesothelial tissue of peritoneum

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

Code Description

ICD-10 D19.1 is a billable code used to indicate a diagnosis of benign neoplasm of mesothelial tissue of peritoneum.

Key Diagnostic Point:

Benign neoplasms of mesothelial tissue of the peritoneum are non-cancerous growths that arise from the mesothelial cells lining the peritoneal cavity. These neoplasms can present as localized masses or diffuse thickening of the peritoneum. Clinically, they may be asymptomatic or cause symptoms such as abdominal pain, distension, or bowel obstruction depending on their size and location. Diagnosis typically involves imaging studies such as ultrasound or CT scans, and may require biopsy for definitive histological confirmation. While benign, these neoplasms should be monitored due to their potential for local complications and, in rare cases, transformation into malignant forms. Regular follow-up and imaging may be warranted to assess for changes in size or characteristics, ensuring timely intervention if necessary.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from malignant neoplasms
  • Need for precise documentation of imaging findings
  • Potential for co-existing conditions affecting coding
  • Variability in clinical presentation requiring thorough evaluation

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to specify the location of the neoplasm
  • Misclassification as malignant due to similar terminology
  • Lack of follow-up documentation indicating surveillance

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed pathology reports and imaging studies must be documented to support the diagnosis.

Common Clinical Scenarios

Patients presenting with abdominal masses or unexplained abdominal symptoms.

Billing Considerations

Ensure that any imaging or biopsy results are clearly linked to the diagnosis to avoid misclassification.

Gastroenterology

Documentation Requirements

Endoscopic findings and imaging results should be documented to provide a comprehensive view of the patient's condition.

Common Clinical Scenarios

Patients with chronic abdominal pain or unexplained gastrointestinal symptoms.

Billing Considerations

Documentation should include any relevant history of prior abdominal surgeries or conditions that may affect the peritoneum.

Coding Guidelines

Inclusion Criteria

Use D19.1 When
  • According to ICD
  • 10 coding guidelines, D19
  • 1 should be used when a benign neoplasm of mesothelial tissue of the peritoneum is confirmed through imaging or biopsy
  • It is important to document the specific location and characteristics of the neoplasm

Exclusion Criteria

Do NOT use D19.1 When
  • Exclusion criteria include any neoplasms that are classified as malignant or those that do not arise from mesothelial tissue

Related ICD-10 Codes

Related CPT Codes

49000CPT Code

Exploratory laparotomy

Clinical Scenario

Used when a patient with a suspected abdominal mass undergoes surgery for diagnosis.

Documentation Requirements

Operative reports must detail findings and any biopsies taken.

Specialty Considerations

Surgeons should document the rationale for surgery and any findings related to the neoplasm.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of benign neoplasms, improving the accuracy of data collection and reimbursement processes. D19.1 provides a clear distinction from malignant neoplasms, which is crucial for treatment planning and patient management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of benign neoplasms, improving the accuracy of data collection and reimbursement processes. D19.1 provides a clear distinction from malignant neoplasms, which is crucial for treatment planning and patient management.

Reimbursement & Billing Impact

reimbursement processes. D19.1 provides a clear distinction from malignant neoplasms, which is crucial for treatment planning and 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 are the common symptoms of a benign neoplasm of the peritoneum?

Common symptoms may include abdominal pain, distension, and bowel obstruction, although many patients may be asymptomatic.

How often should patients with a benign neoplasm of the peritoneum be monitored?

Surveillance frequency depends on the size and symptoms of the neoplasm, but regular follow-up imaging is generally recommended.