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v1.0.0
ICD-10 Guide
ICD-10 CodesR16.1

R16.1

Splenomegaly, not elsewhere classified

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

Code Description

ICD-10 R16.1 is a billable code used to indicate a diagnosis of splenomegaly, not elsewhere classified.

Key Diagnostic Point:

Splenomegaly refers to the abnormal enlargement of the spleen, which can be a sign of various underlying conditions. This condition may present with symptoms such as abdominal discomfort, early satiety, or a palpable mass in the left upper quadrant. Patients may also experience symptoms related to the underlying cause, such as fever, weight loss, or jaundice. Laboratory findings may include abnormalities in blood counts, such as leukopenia, thrombocytopenia, or anemia, depending on the etiology. Imaging studies, particularly ultrasound or CT scans, are often utilized to confirm splenomegaly and assess its size and any associated abnormalities. It is essential to evaluate the patient's history and perform a thorough physical examination to identify potential causes, which may include infections, hematologic disorders, liver diseases, or malignancies. Accurate coding of splenomegaly requires careful consideration of the clinical context and associated findings.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of potential underlying causes
  • Need for comprehensive patient history
  • Differentiation from other abdominal conditions
  • Potential for concurrent diagnoses

Audit Risk Factors

  • Inadequate documentation of underlying conditions
  • Failure to specify the cause of splenomegaly
  • Misclassification of splenomegaly as a primary diagnosis
  • Lack of supporting lab or imaging results

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed patient history, physical examination findings, and results from laboratory and imaging studies are essential for accurate coding.

Common Clinical Scenarios

Patients presenting with unexplained anemia, thrombocytopenia, or recurrent infections may be evaluated for splenomegaly.

Billing Considerations

Consideration of chronic conditions such as liver disease or hematologic disorders that may contribute to splenomegaly.

Emergency Medicine

Documentation Requirements

Acute care documentation should include vital signs, presenting symptoms, and any immediate interventions performed.

Common Clinical Scenarios

Patients presenting with acute abdominal pain or trauma may have splenomegaly identified during evaluation.

Billing Considerations

Rapid assessment and documentation of splenomegaly in the context of acute illness or injury.

Coding Guidelines

Inclusion Criteria

Use R16.1 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation and that any underlying conditions are also coded appropriately

Exclusion Criteria

Do NOT use R16.1 When
No specific exclusions found.

Related CPT Codes

76700CPT Code

Ultrasound, abdomen, complete

Clinical Scenario

Used to evaluate splenomegaly and assess for underlying causes.

Documentation Requirements

Document the indication for the ultrasound and findings related to splenomegaly.

Specialty Considerations

In internal medicine, ensure correlation with clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of splenomegaly, improving the ability to capture the complexity of this condition and its underlying causes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of splenomegaly, improving the ability to capture the complexity of this condition and its underlying causes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of splenomegaly, improving the ability to capture the complexity of this condition and its underlying causes.

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 primary cause of splenomegaly?

Splenomegaly can be caused by a variety of conditions, including infections, liver diseases, hematologic disorders, and malignancies. The specific cause often requires further investigation.