2019 ICD-10-CM Diagnosis Code E24.1

Nelson's syndrome

    2016 2017 2018 2019 Billable/Specific Code
  • E24.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM E24.1 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of E24.1 - other international versions of ICD-10 E24.1 may differ.
The following code(s) above E24.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to E24.1:
  • E00-E89
    2019 ICD-10-CM Range E00-E89

    Endocrine, nutritional and metabolic diseases

    Note
    • All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.
    Type 1 Excludes
    • transitory endocrine and metabolic disorders specific to newborn (P70-P74)
    Endocrine, nutritional and metabolic diseases
  • E20-E35
    2019 ICD-10-CM Range E20-E35

    Disorders of other endocrine glands

    Type 1 Excludes
    Disorders of other endocrine glands
  • E24
    ICD-10-CM Diagnosis Code E24

    Cushing's syndrome

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital adrenal hyperplasia (E25.0)
    Cushing's syndrome
Approximate Synonyms
  • Nelson syndrome
Clinical Information
  • A syndrome characterized by hyperpigmentation, enlarging pituitary mass, visual defects secondary to compression of the optic chiasm, and elevated serum acth. It is caused by the expansion of an underlying acth-secreting pituitary adenoma that grows in the absence of feedback inhibition by adrenal corticosteroids, usually after adrenalectomy.
  • A syndrome that develops following bilateral adrenalectomy for cushing syndrome. The signs and symptoms result from the presence of an adenocorticotropin-secreting pituitary gland adenoma, and include enlargement of the sella turcica and pressure on the adjacent structures, and skin hyperpigmentation.
ICD-10-CM E24.1 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 643 Endocrine disorders with mcc
  • 644 Endocrine disorders with cc
  • 645 Endocrine disorders without cc/mcc

Convert E24.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
Code annotations containing back-references to E24.1:
  • Type 1 Excludes: E22
    ICD-10-CM Diagnosis Code E22

    Hyperfunction of pituitary gland

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • Cushing's syndrome (E24.-)
    • Nelson's syndrome (E24.1)
    • overproduction of ACTH not associated with Cushing's disease (E27.0)
    • overproduction of pituitary ACTH (E24.0)
    • overproduction of thyroid-stimulating hormone (E05.8-)

Diagnosis Index entries containing back-references to E24.1:
  • Nelson's syndrome E24.1

ICD-10-CM Codes Adjacent To E24.1
E22.9 Hyperfunction of pituitary gland, unspecified
E23 Hypofunction and other disorders of the pituitary gland
E23.0 Hypopituitarism
E23.1 Drug-induced hypopituitarism
E23.2 Diabetes insipidus
E23.3 Hypothalamic dysfunction, not elsewhere classified
E23.6 Other disorders of pituitary gland
E23.7 Disorder of pituitary gland, unspecified
E24 Cushing's syndrome
E24.0 Pituitary-dependent Cushing's disease
E24.1 Nelson's syndrome
E24.2 Drug-induced Cushing's syndrome
E24.3 Ectopic ACTH syndrome
E24.4 Alcohol-induced pseudo-Cushing's syndrome
E24.8 Other Cushing's syndrome
E24.9 Cushing's syndrome, unspecified
E25 Adrenogenital disorders
E25.0 Congenital adrenogenital disorders associated with enzyme deficiency
E25.8 Other adrenogenital disorders
E25.9 Adrenogenital disorder, unspecified
E26 Hyperaldosteronism

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.