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ICD-10 Guide
ICD-10 CodesE26.1

E26.1

Billable

Secondary hyperaldosteronism

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

Code Description

ICD-10 E26.1 is a billable code used to indicate a diagnosis of secondary hyperaldosteronism.

Key Diagnostic Point:

Secondary hyperaldosteronism is a condition characterized by excessive production of aldosterone due to an underlying condition rather than an adrenal gland disorder. This condition often arises from factors such as renal artery stenosis, congestive heart failure, or cirrhosis, which lead to decreased renal perfusion and subsequent activation of the renin-angiotensin-aldosterone system (RAAS). The increased aldosterone levels result in sodium retention, potassium excretion, and water retention, leading to hypertension and potential electrolyte imbalances. Unlike primary hyperaldosteronism, where the adrenal glands autonomously produce excess aldosterone, secondary hyperaldosteronism is a compensatory response to systemic conditions. Diagnosis typically involves measuring plasma aldosterone levels, plasma renin activity, and assessing the patient's clinical history and symptoms. Treatment focuses on managing the underlying cause, which may include medications to control blood pressure or surgical interventions for anatomical abnormalities.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between primary and secondary hyperaldosteronism
  • Understanding the underlying causes and their implications
  • Interpreting laboratory results for accurate diagnosis
  • Co-morbid conditions that may complicate the clinical picture

Audit Risk Factors

  • Inadequate documentation of underlying conditions
  • Failure to differentiate between primary and secondary causes
  • Misinterpretation of laboratory results
  • Lack of comprehensive patient history

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

Detailed hormonal assays, patient history, and clinical findings related to aldosterone and renin levels.

Common Clinical Scenarios

Patients presenting with hypertension, hypokalemia, or edema due to secondary causes.

Billing Considerations

Endocrinologists must ensure thorough documentation of the underlying cause to support the diagnosis of secondary hyperaldosteronism.

Nephrology

Documentation Requirements

Assessment of renal function, imaging studies for renal artery stenosis, and comprehensive electrolyte panels.

Common Clinical Scenarios

Patients with chronic kidney disease or renal artery stenosis presenting with hypertension.

Billing Considerations

Nephrologists should document the relationship between renal function and aldosterone levels to justify the diagnosis.

Coding Guidelines

Inclusion Criteria

Use E26.1 When
  • According to ICD
  • 10 coding guidelines, secondary hyperaldosteronism should be coded when it is confirmed that the hyperaldosteronism is due to an identifiable underlying condition
  • Documentation must clearly indicate the cause and any related complications

Exclusion Criteria

Do NOT use E26.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

84144CPT Code

Aldosterone level test

Clinical Scenario

Used to confirm diagnosis of hyperaldosteronism.

Documentation Requirements

Document the reason for the test and any relevant clinical findings.

Specialty Considerations

Endocrinologists should ensure that the test results are interpreted in the context of the patient's overall clinical picture.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of secondary hyperaldosteronism, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better understanding patient populations and outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of secondary hyperaldosteronism, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better understanding patient populations and outcomes.

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 is the primary cause of secondary hyperaldosteronism?

Secondary hyperaldosteronism is primarily caused by conditions that lead to decreased renal perfusion, such as renal artery stenosis, heart failure, or liver cirrhosis.

How is secondary hyperaldosteronism diagnosed?

Diagnosis involves measuring plasma aldosterone and renin levels, along with a thorough clinical evaluation to identify the underlying cause.