E24.3 — Ectopic ACTH syndrome
E24.3 is a billable, specific ICD-10-CM code for ectopic acth syndrome. It is valid for submission on a claim.
Other codes that can never be billed with E24.3
These codes carry an Excludes1 note pointing at E24.3. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E24.3 alone.
- E34.2Ectopic hormone secretion, not elsewhere classified
Risk adjustment
E24.3 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
E24.3 is named in 12 Medicare coverage policies — 12 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A54923Billing and Coding: Bariatric Surgery for Treatment of Co-Morbidities Conditions Related to Morbid Obesity
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A56612Billing and Coding: CT of the Head
- A57132Billing and Coding: Bone Mass Measurement
How E24.3 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 E24.3.
- ACTH ectopic syndrome
- Ectopic, ectopia›ACTH syndrome
- Syndrome›ectopic ACTH
- Syndrome›Cushing's›due to›ectopic ACTH
Related codes at this level
Codes that share E24. If E24.3 is not quite right, the correct code is usually one of these.
Questions about E24.3
- Is E24.3 a billable ICD-10-CM code?
- Yes. E24.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E24.3 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).