MCMedicalCodingSoftware
E34.2

E34.2: Ectopic hormone secretion, not elsewhere classified

Billable / specific codeICD-10-CM

E34.2 is a billable, specific ICD-10-CM code for ectopic hormone secretion, not elsewhere classified. It is valid for submission on a claim.

Check E34.2 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • ectopic ACTH syndrome (E24.3)

Excludes1 inherited from the categories above E34.2

A category’s note binds every code beneath it.

Written on E34: Other endocrine disorders

  • pseudohypoparathyroidism (E20.1)

Other codes that can never be billed with E34.2

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • E21Hyperparathyroidism and other disorders of parathyroid gland

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

E34.2 is named in 6 Medicare coverage policies: 6 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A57122Billing and Coding: Parathormone (Parathyroid Hormone)
  • A57132Billing and Coding: Bone Mass Measurement
  • A57189Billing and Coding: Serum Magnesium
  • A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Alphabetic index entries that lead here

  • Ectopic, ectopia›hormone secretion NEC
  • Secretion›hormone›ectopic NEC

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under E34

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.