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ICD-10 Guide
ICD-10 CodesD44.6

D44.6

Billable

Neoplasm of uncertain behavior of carotid body

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

Code Description

ICD-10 D44.6 is a billable code used to indicate a diagnosis of neoplasm of uncertain behavior of carotid body.

Key Diagnostic Point:

D44.6 refers to a neoplasm of uncertain behavior located in the carotid body, which is a small cluster of chemoreceptors and supporting cells located at the bifurcation of the common carotid artery. These neoplasms can be benign or malignant, but their uncertain behavior makes them challenging to classify definitively. Clinically, patients may present with symptoms such as neck swelling, pain, or neurological deficits due to compression of adjacent structures. Diagnosis typically involves imaging studies like ultrasound, CT, or MRI, and may require biopsy for histological examination. Surveillance is crucial, as these neoplasms can exhibit unpredictable growth patterns, necessitating regular monitoring to assess for any signs of malignant transformation. The management may vary from observation to surgical intervention, depending on the size, symptoms, and growth rate of the neoplasm. Accurate coding is essential for appropriate treatment planning and reimbursement, as well as for tracking outcomes in clinical practice.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Uncertainty in behavior classification
  • Need for comprehensive diagnostic imaging
  • Potential for malignant transformation
  • Variability in clinical presentation

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to document surveillance plans
  • Misclassification of neoplasm behavior
  • Lack of follow-up notes

Specialty Focus

Medical Specialties

Oncology

Documentation Requirements

Detailed pathology reports, imaging studies, and treatment plans.

Common Clinical Scenarios

Management of patients with diagnosed carotid body tumors, including surgical and non-surgical options.

Billing Considerations

Ensure accurate staging and behavior classification to guide treatment.

Otolaryngology

Documentation Requirements

Comprehensive ENT evaluations, imaging results, and surgical notes.

Common Clinical Scenarios

Evaluation of neck masses and potential surgical excision of carotid body tumors.

Billing Considerations

Documenting the anatomical location and any vascular involvement is critical.

Coding Guidelines

Inclusion Criteria

Use D44.6 When
  • According to ICD
  • 10 guidelines, D44
  • 6 should be used when the neoplasm's behavior is uncertain and specifically located in the carotid body
  • Coders must ensure that the diagnosis is supported by appropriate clinical documentation and imaging studies

Exclusion Criteria

Do NOT use D44.6 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

38500CPT Code

Biopsy of lymph node or other tissue

Clinical Scenario

Used when a biopsy is performed to determine the nature of the neoplasm.

Documentation Requirements

Pathology report and imaging studies must be documented.

Specialty Considerations

Oncology specialists should ensure that the biopsy results are clearly linked to the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of neoplasms, improving the ability to track and manage cases of uncertain behavior, which can lead to better patient outcomes and more accurate reimbursement.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of neoplasms, improving the ability to track and manage cases of uncertain behavior, which can lead to better patient outcomes and more accurate 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

What does 'neoplasm of uncertain behavior' mean?

It refers to a growth that cannot be definitively classified as benign or malignant based on current clinical and pathological criteria.