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v1.0.0
ICD-10 Guide
DiagnosesAdrenal Incidentaloma

Adrenal Incidentaloma

ICD-10 Coding for Adrenal Incidentaloma(E27.8, R90.8, D35.0)

PRIMARY SPECIALTYEndocrinology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Adrenal Incidentaloma?
Essential facts and insights about Adrenal Incidentaloma

Key Clinical Considerations:

  • Presence of an adrenal mass discovered incidentally during imaging for unrelated reasons.
  • Laboratory findings may include abnormal hormone levels (e.g., cortisol, aldosterone) depending on the functionality of the incidentaloma.
  • Physical examination may be unremarkable; however, signs of hormonal excess (e.g., Cushing's syndrome) may be present in functional tumors.
  • Imaging findings typically include CT or MRI results showing an adrenal mass, often characterized by size, density, and enhancement patterns.
  • Severity criteria may involve the size of the incidentaloma (generally >4 cm is concerning) and the presence of hormonal activity.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Complete medical history and physical examination findings related to the incidentaloma.
  • Specific terminology such as 'adrenal incidentaloma' and any associated symptoms or hormonal evaluations.
  • Examples include documenting the size, imaging characteristics, and any hormonal assays performed.
  • Medical necessity documentation should justify the imaging studies that led to the incidentaloma discovery.
  • Quality measures may include tracking follow-up imaging or hormonal evaluations to monitor the incidentaloma.

Coding Guidelines

Usage Guidelines & Examples

  • Use E27.8 for adrenal incidentaloma when the mass is not functioning and does not cause symptoms.
  • Do NOT use this code if the mass is symptomatic or if there is a known malignancy.
  • Compare with D35.0 for benign adrenal tumors and R90.8 for incidental findings that are not specific to the adrenal gland.
  • Common errors include misclassifying functional tumors or failing to document the incidental nature of the finding.
  • In complex cases, ensure to document the clinical context and any differential diagnoses considered.

Code Exclusions

Important Exclusions

  • Excludes known adrenal malignancies or symptomatic adrenal masses.
  • Alternative codes include C74 for malignant neoplasms of the adrenal gland.
  • Conditions are excluded to ensure accurate representation of incidental findings versus active disease.
  • Avoid common mistakes such as coding incidentalomas as malignant without evidence.
  • Related conditions include adrenal hyperplasia and primary adrenal insufficiency.

Related ICD-10 Codes

Primary Codes
E27.8
Other disorders of adrenal gland
R90.8
Other abnormal findings on diagnostic imaging of central nervous system
D35.0
Benign neoplasm of adrenal gland
Ancillary Codes
R93.6
E27.8
to indicate abnormal imaging findings.
Differential Codes
R90.8
R90.8
when the finding is incidental and no specific adrenal disorder is diagnosed.
E27.8
E27.8
when a specific adrenal disorder is diagnosed.
C74.9
C74.9
when the mass is confirmed as malignant.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Endocrinology

Specialty Applications

  • Patients with incidental findings on imaging, often asymptomatic.
  • Commonly seen in adults, with varying risk factors including obesity and hypertension.
  • Clinical settings include outpatient endocrinology consultations and inpatient evaluations.
  • Endocrinology specialty applications focus on hormonal evaluation and management.
  • Treatment contexts may involve monitoring or surgical intervention based on size and functionality.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Template: 'Patient diagnosed with adrenal incidentaloma based on imaging findings.'

Template 2

Template: 'Clinical presentation consistent with adrenal incidentaloma including no significant symptoms.'

Template 3

Template: 'Diagnostic criteria met as evidenced by imaging showing a 3 cm adrenal mass.'

Template 4

Template: 'Treatment plan initiated for adrenal incidentaloma with follow-up imaging scheduled.'

Template 5

Template: 'Follow-up care for adrenal incidentaloma including monitoring of hormone levels.'

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What documentation is required for this diagnosis?

Document imaging findings, size of the mass, and any hormonal evaluations.

How does this differ from similar diagnoses?

Adrenal incidentaloma is specifically an asymptomatic mass found incidentally, unlike other adrenal disorders.

What are common billing considerations?

Ensure proper coding for imaging studies and follow-up evaluations to optimize reimbursement.

What procedures are typically associated?

CPT codes for imaging (e.g., CT, MRI) and potential surgical interventions if indicated.

Are there any quality reporting implications?

Monitor follow-up imaging and hormonal assessments as part of quality measures.