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ICD-10 Guide
ICD-10 CodesE26.01

E26.01

Billable

Conn's syndrome

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

Code Description

ICD-10 E26.01 is a billable code used to indicate a diagnosis of conn's syndrome.

Key Diagnostic Point:

Conn's syndrome, also known as primary hyperaldosteronism, is an endocrine disorder characterized by excessive production of the hormone aldosterone from the adrenal glands. This condition leads to sodium retention, potassium excretion, and increased blood volume, resulting in hypertension. The adrenal glands, located on top of each kidney, are responsible for producing various hormones, including aldosterone, cortisol, and adrenaline. In Conn's syndrome, the overproduction of aldosterone can be due to an adrenal adenoma (a benign tumor) or adrenal hyperplasia. Patients often present with symptoms of hypertension, muscle weakness, fatigue, and frequent urination. Diagnosis typically involves measuring plasma aldosterone levels and renin activity, along with imaging studies to identify adrenal abnormalities. Treatment options include surgical removal of the adenoma or medical management with aldosterone antagonists. Proper management of Conn's syndrome is crucial to prevent complications such as cardiovascular disease and renal impairment.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between primary and secondary causes of hyperaldosteronism.
  • Need for comprehensive hormonal evaluation and imaging studies.
  • Potential for coexisting conditions such as hypertension and diabetes.
  • Variability in clinical presentation among patients.

Audit Risk Factors

  • Inadequate documentation of lab results.
  • Failure to document the specific type of adrenal abnormality.
  • Misclassification of the condition as secondary hyperaldosteronism.
  • Lack of follow-up documentation for treatment efficacy.

Specialty Focus

Medical Specialties

Endocrinology

Documentation Requirements

Thorough documentation of hormonal assays, imaging studies, and clinical symptoms.

Common Clinical Scenarios

Patients presenting with resistant hypertension and electrolyte imbalances.

Billing Considerations

Ensure clear documentation of the diagnostic workup and treatment plan.

Nephrology

Documentation Requirements

Detailed records of renal function tests and electrolyte levels.

Common Clinical Scenarios

Patients with hypertension and renal impairment requiring management of aldosterone levels.

Billing Considerations

Document any renal complications related to hyperaldosteronism.

Coding Guidelines

Inclusion Criteria

Use E26.01 When
  • According to ICD
  • 10 coding guidelines, E26
  • 01 should be used when there is a confirmed diagnosis of Conn's syndrome with documented evidence of elevated aldosterone levels and appropriate imaging studies

Exclusion Criteria

Do NOT use E26.01 When
  • Exclusion criteria include secondary causes of hyperaldosteronism

Related ICD-10 Codes

Related CPT Codes

CPT 82088CPT Code

Aldosterone level test

Clinical Scenario

Used to confirm diagnosis of Conn's syndrome.

Documentation Requirements

Document the reason for the test and results.

Specialty Considerations

Endocrinologists should ensure comprehensive hormonal evaluation.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like Conn's syndrome, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better patient management and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like Conn's syndrome, improving the accuracy of diagnosis and treatment tracking. This specificity aids in better patient management and resource allocation.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    Conn's Syndrome Overview

Coding & Billing References

  • •
    Conn's Syndrome Overview

Frequently Asked Questions

What are the common symptoms of Conn's syndrome?

Common symptoms include hypertension, muscle weakness, fatigue, and frequent urination due to electrolyte imbalances.

How is Conn's syndrome diagnosed?

Diagnosis typically involves measuring plasma aldosterone levels, plasma renin activity, and imaging studies to identify adrenal abnormalities.