E34.2 — Ectopic hormone secretion, not elsewhere classified
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.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- ectopic ACTH syndrome (E24.3)
Other codes that can never be billed with E34.2
These codes carry an Excludes1 note pointing at E34.2. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E34.2 alone.
- E21Hyperparathyroidism and other disorders of parathyroid gland
Risk adjustment
E34.2 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
E34.2 is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A57122Billing and Coding: Parathormone (Parathyroid Hormone)
- A57132Billing and Coding: Bone Mass Measurement
- A57132Billing and Coding: Bone Mass Measurement
- A57189Billing and Coding: Serum Magnesium
How E34.2 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to E34.2.
- Ectopic, ectopia›hormone secretion NEC
- Secretion›hormone›ectopic NEC
Related codes at this level
Codes that share E34. If E34.2 is not quite right, the correct code is usually one of these.
Questions about E34.2
- Is E34.2 a billable ICD-10-CM code?
- Yes. E34.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E34.2 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).
- What cannot be coded together with E34.2?
- E34.2 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.