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Diagnosis Code


Code Information

Diagnosis Code: E26.01

Short Description: Conn's syndrome

Long Description: Conn's syndrome

The code E26.01 is VALID for claim submission

Code Classification:

  • Endocrine, nutritional and metabolic diseases (E00–E89)
    • Disorders of other endocrine glands (E20-E35)
      • Hyperaldosteronism (E26)
        • E26.01 Conn's syndrome

Code Version: 2022 ICD-10-CM


  • Adrenal adenoma
  • Adrenal cortical adenoma
  • Aldosterone-producing adenoma
  • Benign neoplasm of adrenal cortex
  • Hyperaldosteronism due to neoplasm of the adrenal cortex
  • Primary hyperaldosteronism due to adrenal adenoma

Diagnostic Related Group(s)

The code E26.01 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Endocrine Disorders With Mcc (643)
  • Endocrine Disorders With Cc (644)
  • Endocrine Disorders Without Cc/mcc (645)

References to Index of Diseases and Injuries

The code E26.01 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Code Also:
    • adrenal adenoma (@D35.0*-)

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
E26.01 Right Arrow 255.12 Conn's syndrome

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
E26 Hyperaldosteronism
E26.0 Primary hyperaldosteronism
E26.02 Glucocorticoid-remediable aldosteronism
E26.09 Other primary hyperaldosteronism
E26.1 Secondary hyperaldosteronism
E26.8 Other hyperaldosteronism
E26.81 Bartter's syndrome
E26.89 Other hyperaldosteronism
E26.9 Hyperaldosteronism, unspecified

This page was last updated on: 10/1/2023