E34.2 Ectopic hormone secretion, not elsewhere classified

✓ Billable ICD-10-CM 2026
Open E34.2 in Web App →

The ICD-10-CM code for Ectopic hormone secretion, not elsewhere classified is E34.2 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
E20-E35: Disorders of other endocrine glands (E20-E35)
Category E34
23 codes (18 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to E34.2:

  • Ectopic, ectopia (congenital) › hormone secretion NEC
  • Secretion › hormone › ectopic NEC
Excludes1
Not coded here. These conditions should NOT be coded together with E34.2.
  • ectopic ACTH syndrome (E24.3)

U.S. Hospital Utilization

  • An estimated 80 U.S. inpatient stays in 2018 included E34.2 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Diabetes mellitus (TOC entry)

a. Diabetes mellitus ................................................................................................................... 39

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.4.a
Obesity (TOC entry)

b. Obesity .................................................................................................................................. 42

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.4.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

E34 Other endocrine disorders

Related Codes in E34

E34 Other endocrine disorders E34.0 Carcinoid syndrome E34.00 Carcinoid syndrome, unspecified E34.01 Carcinoid heart syndrome E34.09 Other carcinoid syndrome E34.1 Other hypersecretion of intestinal hormones E34.3 Short stature due to endocrine disorder E34.30 Short stature due to endocrine disorder, unspecified E34.31 Constitutional short stature E34.32 Genetic causes of short stature E34.321 Primary insulin-like growth factor-1 (IGF-1) deficiency E34.322 Insulin-like growth factor-1 (IGF-1) resistance E34.328 Other genetic causes of short stature E34.329 Unspecified genetic causes of short stature E34.39 Other short stature due to endocrine disorder E34.4 Constitutional tall stature E34.5 Androgen insensitivity syndrome E34.50 Androgen insensitivity syndrome, unspecified E34.51 Complete androgen insensitivity syndrome E34.52 Partial androgen insensitivity syndrome
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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