2022 ICD-10-CM Code E26.01

Conn's syndrome

Version 2021

Valid for Submission

ICD-10:E26.01
Short Description:Conn's syndrome
Long Description:Conn's syndrome

Code Classification

  • Endocrine, nutritional and metabolic diseases (E00–E90)
    • Disorders of other endocrine glands (E20-E35)
      • Hyperaldosteronism (E26)

E26.01 is a billable diagnosis code used to specify a medical diagnosis of conn's syndrome. The code E26.01 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.

The ICD-10-CM code E26.01 might also be used to specify conditions or terms like adrenal adenoma, aldosterone-producing adenoma, benign neoplasm of adrenal cortex, hyperaldosteronism due to neoplasm of the adrenal cortex, neoplasm of adrenal cortex , primary hyperaldosteronism due to adrenal adenoma, etc.

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code E26.01:


Code Also

Code Also
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code E26.01 are found in the index:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Clinical Information

Convert E26.01 to ICD-9 Code

Information for Patients


Adrenal Gland Disorders

The adrenal glands are small glands located on top of each kidney. They produce hormones that you can't live without, including sex hormones and cortisol. Cortisol helps you respond to stress and has many other important functions.

With adrenal gland disorders, your glands make too much or not enough hormones. In Cushing's syndrome, there's too much cortisol, while with Addison's disease, there is too little. Some people are born unable to make enough cortisol.

Causes of adrenal gland disorders include

Treatment depends on which problem you have. Surgery or medicines can treat many adrenal gland disorders.

NIH: National Institute of Child Health and Human Development


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Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)