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v1.0.0
ICD-10 Guide
ICD-10 CodesR19.33

R19.33

Right lower quadrant abdominal rigidity

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

Code Description

ICD-10 R19.33 is a billable code used to indicate a diagnosis of right lower quadrant abdominal rigidity.

Key Diagnostic Point:

Right lower quadrant abdominal rigidity is a clinical sign characterized by involuntary muscle contraction in the right lower abdominal area, often indicating underlying pathology. This rigidity can be a response to inflammation, irritation, or other pathological processes affecting the abdominal organs, such as the appendix, cecum, or portions of the small intestine. It is commonly assessed during a physical examination, where the clinician palpates the abdomen to identify areas of tenderness and rigidity. The presence of rigidity may suggest acute abdominal conditions, including appendicitis, diverticulitis, or bowel obstruction. In some cases, it may also be associated with peritonitis or intra-abdominal bleeding. The clinical context is crucial, as rigidity often accompanies other symptoms such as pain, tenderness, and changes in bowel habits. Laboratory findings may include elevated white blood cell counts or imaging studies revealing inflammation or obstruction. Accurate identification and documentation of abdominal rigidity are essential for appropriate diagnosis and treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and underlying causes
  • Need for thorough documentation of associated symptoms
  • Differentiation from other abdominal signs (e.g., tenderness, guarding)
  • Potential overlap with other ICD-10 codes

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to link rigidity to a specific diagnosis
  • Misinterpretation of rigidity as a standalone symptom
  • Inconsistent coding practices across providers

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed documentation of abdominal examination findings, including the presence of rigidity, associated symptoms, and any relevant history.

Common Clinical Scenarios

Patients presenting with abdominal pain, fever, and rigidity suggestive of appendicitis or diverticulitis.

Billing Considerations

Consideration of comorbidities and their impact on abdominal symptoms.

Emergency Medicine

Documentation Requirements

Acute care documentation must include a thorough assessment of abdominal rigidity, vital signs, and any immediate interventions.

Common Clinical Scenarios

Patients with acute abdominal pain and rigidity requiring urgent surgical evaluation.

Billing Considerations

Rapid assessment and documentation are critical due to the potential for life-threatening conditions.

Coding Guidelines

Inclusion Criteria

Use R19.33 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that R19
  • 33 is used only when abdominal rigidity is documented and linked to a clinical diagnosis
  • Ensure that the clinical context supports the use of this code

Exclusion Criteria

Do NOT use R19.33 When
No specific exclusions found.

Related CPT Codes

99283CPT Code

Emergency department visit, moderate complexity

Clinical Scenario

Used when a patient presents with abdominal rigidity and requires evaluation.

Documentation Requirements

Document the patient's history, examination findings, and any diagnostic tests performed.

Specialty Considerations

Emergency medicine providers should ensure rapid and thorough documentation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of symptoms like abdominal rigidity, improving the accuracy of clinical data and enhancing patient care.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of symptoms like abdominal rigidity, improving the accuracy of clinical data and enhancing patient care.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of symptoms like abdominal rigidity, improving the accuracy of clinical data and enhancing patient care.

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 abdominal rigidity?

Abdominal rigidity is a clinical sign that may indicate serious underlying conditions such as appendicitis or peritonitis. It requires prompt evaluation and management.