Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.
Start free with EleplanACTH-dependent Cushing syndrome
ORPHA:99892Clinical group
Also called ACTH-dependent CS · Adrenocorticotropic hormone-dependent Cushing syndrome · Corticotropin-dependent Cushing syndrome
What it is
A group of endogenous Cushing syndrome (CS) caused by abnormal production of ACTH due, in 80% of cases, to adrenocorticotropic hormone (ACTH) oversecretion by a pituitary adenoma (Cushing disease, CD) and in 20% of cases to ectopic ACTH secretion (CS due to EAS) by an extrapituitary tumor or very rarely due to a tumor secreting both ACTH and corticotrophin-releasing hormone (CRH).
Key facts
- Prevalence
- 1-9 / 1 000 000 (annual incidence)
- Classified as
- Clinical group
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Genes reported in subtypes
Orphanet records these genes on 1 more specific entry under this disorder, not on this entry itself:
A well-studied disease is usually split into subtypes, and the gene is curated on whichever one the evidence belongs to. Open a subtype to see which gene goes with it.
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
Powered by Eleplan
A rare diagnosis is just the start. Eleplan keeps the whole care plan in one place.
Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, so you are not retelling the same story to every new specialist. With Ellie, your AI care assistant, on top of it. Free to start.