E27.40 – Unspecified adrenocortical insufficiency
ICD-10-CM 2027 diagnosis code · Disorders of other endocrine glands
ICD-10-CM code
E27.40
- Code
E27.40(claims format:E2740)- Description
- Unspecified adrenocortical insufficiency
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 4. Endocrine, nutritional and metabolic diseases (E00-E89)
- Block
- E20-E35 Disorders of other endocrine glands
- Parent codes
- E27 › E27.4
Notes for E27.40
Applicable to:
- Adrenocortical insufficiency NOS
- Hypoaldosteronism
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
E27.4 – Other and unspecified adrenocortical insufficiency
Excludes1 (not coded here):
Block E20-E35
Index terms for E27.40
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Hypoaldosteronism
- Hypoadrenocorticism
- Hypoadrenalism, hypoadrenia
- Hypofunction, adrenocortical
- Hypofunction, corticoadrenal NEC
- Insufficiency, insufficient, adrenal
- Deficiency, deficient, corticoadrenal
- Insufficiency, insufficient, suprarenal
- Insufficiency, insufficient, adrenocortical
- Insufficiency, insufficient, corticoadrenal
Related codes in E27.4
Frequently asked questions
What is ICD-10 code E27.40?
E27.40 is the ICD-10-CM code for unspecified adrenocortical insufficiency, in the block E20-E35 (Disorders of other endocrine glands).
Is E27.40 a billable code?
Yes. E27.40 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does E27.40 belong to?
It belongs to category E27 – Other disorders of adrenal gland.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.