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E27.40 — Unspecified adrenocortical insufficiency
E27.40
What this code means
Adrenocortical insufficiency means the adrenal glands do not make enough steroid hormones, including cortisol.
Also called: adrenal insufficiency, addisons disease.
When this code is used
Used for adrenocortical insufficiency when the type is not specified.
Where it sits in ICD-10-CM
Code E27.40 belongs to Chapter 4: Endocrine, nutritional and metabolic diseases, which covers codes E00–E89 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
Frequently asked questions
What is ICD-10-CM code E27.40?
E27.40 is the ICD-10-CM diagnosis code for “Unspecified adrenocortical insufficiency”. Adrenocortical insufficiency means the adrenal glands do not make enough steroid hormones, including cortisol.
When is code E27.40 used?
Used for adrenocortical insufficiency when the type is not specified. It belongs to Chapter 4 of ICD-10-CM (Endocrine, nutritional and metabolic diseases).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.