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 CodesR19.00

R19.00

Intra-abdominal and pelvic swelling, mass and lump, unspecified site

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 R19.00 is a billable code used to indicate a diagnosis of intra-abdominal and pelvic swelling, mass and lump, unspecified site.

Key Diagnostic Point:

R19.00 is used to classify cases of intra-abdominal and pelvic swelling, mass, or lump when the specific site is not identified. This code encompasses a variety of clinical presentations that may arise from different underlying conditions, including benign tumors, malignant neoplasms, cysts, abscesses, or organomegaly. Symptoms may include abdominal pain, discomfort, changes in bowel habits, or urinary symptoms, depending on the mass's location and size. Clinical evaluation often involves imaging studies such as ultrasound, CT scans, or MRI to determine the mass's characteristics and potential etiology. Laboratory tests may also be conducted to assess for infection, inflammation, or malignancy. Accurate coding requires thorough documentation of the clinical findings, diagnostic imaging results, and any relevant laboratory tests to support the diagnosis and ensure appropriate reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Unspecified site can lead to ambiguity in coding.
  • Requires comprehensive documentation to justify the diagnosis.
  • Differential diagnosis may include a wide range of conditions.
  • Potential overlap with other codes for abdominal masses.

Audit Risk Factors

  • Insufficient documentation to support the diagnosis.
  • Failure to specify the site of the mass.
  • Inconsistent clinical findings in the medical record.
  • Lack of imaging or lab results to substantiate the diagnosis.

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed history and physical examination, imaging results, and lab findings must be documented.

Common Clinical Scenarios

Patients presenting with vague abdominal symptoms and incidental findings on imaging.

Billing Considerations

Consideration of comorbidities and their impact on the clinical picture.

Emergency Medicine

Documentation Requirements

Acute care documentation must include a thorough assessment of the patient's presenting symptoms and any immediate interventions.

Common Clinical Scenarios

Patients with acute abdominal pain and palpable masses requiring urgent evaluation.

Billing Considerations

Rapid assessment and documentation are critical in emergency settings to guide treatment.

Coding Guidelines

Inclusion Criteria

Use R19.00 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the code is supported by clinical documentation and that the site of the mass is clearly indicated when possible

Exclusion Criteria

Do NOT use R19.00 When
No specific exclusions found.

Related CPT Codes

74176CPT Code

CT abdomen and pelvis with contrast

Clinical Scenario

Used when imaging is performed to evaluate the mass.

Documentation Requirements

Document the reason for the imaging and findings.

Specialty Considerations

Ensure that the imaging report is included in the patient's medical record.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specificity in coding, but R19.00 remains a catch-all for unspecified masses, which can lead to challenges in documentation and justification for reimbursement.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specificity in coding, but R19.00 remains a catch-all for unspecified masses, which can lead to challenges in documentation and justification for reimbursement.

Reimbursement & Billing Impact

reimbursement.

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

When should I use R19.00?

Use R19.00 when there is intra-abdominal or pelvic swelling, mass, or lump, and the specific site is not identified. Ensure that the clinical documentation supports this diagnosis.