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ICD-10 Guide
ICD-10 CodesR19.04

R19.04

Left lower quadrant abdominal swelling, mass and lump

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

Code Description

ICD-10 R19.04 is a billable code used to indicate a diagnosis of left lower quadrant abdominal swelling, mass and lump.

Key Diagnostic Point:

R19.04 refers to the clinical presentation of swelling, mass, or lump specifically located in the left lower quadrant of the abdomen. This symptom can arise from various underlying conditions, including gastrointestinal, gynecological, or urological issues. Common causes include diverticulitis, ovarian cysts, hernias, and tumors. The swelling may be palpable and can vary in size and consistency. Patients may present with associated symptoms such as pain, changes in bowel habits, or urinary symptoms, depending on the underlying cause. Clinical evaluation often involves a thorough history and physical examination, imaging studies like ultrasound or CT scans, and possibly laboratory tests to identify any infectious or inflammatory processes. Accurate diagnosis is crucial as it guides appropriate management and treatment strategies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of potential underlying causes requiring differential diagnosis
  • Need for comprehensive documentation to support the diagnosis
  • Potential overlap with other abdominal codes
  • Variability in clinical presentation and associated symptoms

Audit Risk Factors

  • Inadequate documentation of the clinical findings
  • Failure to specify the underlying cause of the mass or swelling
  • Misuse of the code when a more specific diagnosis is available
  • Inconsistent coding across different providers or settings

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed history of present illness, physical exam findings, and any imaging or lab results.

Common Clinical Scenarios

Patients presenting with abdominal pain and swelling, requiring evaluation for possible diverticulitis or other gastrointestinal issues.

Billing Considerations

Ensure to document any associated symptoms and the rationale for imaging studies.

Emergency Medicine

Documentation Requirements

Acute care documentation including vital signs, immediate assessment findings, and any interventions performed.

Common Clinical Scenarios

Patients with acute abdominal pain and swelling, potentially indicating an emergency such as a ruptured cyst or diverticulitis.

Billing Considerations

Document the urgency of the situation and any immediate treatments provided.

Coding Guidelines

Inclusion Criteria

Use R19.04 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that the code is used only when the swelling, mass, or lump is specifically located in the left lower quadrant and not due to a more specific diagnosis

Exclusion Criteria

Do NOT use R19.04 When
No specific exclusions found.

Related CPT Codes

76700CPT Code

Ultrasound, abdomen, complete

Clinical Scenario

Used when imaging is required to evaluate the mass or swelling.

Documentation Requirements

Document the reason for the ultrasound and findings.

Specialty Considerations

Ensure that the ultrasound 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 abdominal symptoms, which aids in better tracking of conditions and outcomes. R19.04 provides a clear designation for left lower quadrant swelling, improving data accuracy.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specificity in coding abdominal symptoms, which aids in better tracking of conditions and outcomes. R19.04 provides a clear designation for left lower quadrant swelling, improving data accuracy.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specificity in coding abdominal symptoms, which aids in better tracking of conditions and outcomes. R19.04 provides a clear designation for left lower quadrant swelling, improving data accuracy.

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 R19.04?

Use R19.04 when a patient presents with swelling, mass, or lump specifically in the left lower quadrant of the abdomen, and ensure that the documentation supports this diagnosis.