E27.9 Disorder of adrenal gland, unspecified

Billable ICD-10-CM code, FY2026.

Risk adjustment (HCC)

• CMS-HCC V22: HCC 23 — Other Significant Endocrine and Metabolic Disorders
• RxHCC V08: HCC 43 — Pituitary, Adrenal Gland, and Other Endocrine and Metabolic Disorders
• ESRD V24: HCC 23

MS-DRG index

Defines the logic of DRG(s) 643-645 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 255.9 Unspecified disorder of adrenal glands

Code annotations containing back-references to E27.9

Back-references to E27

• Code First: G63 Polyneuropathy in diseases classified elsewhere ("endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)")

Diagnosis Index entries for E27.9

• Disease, diseased › adrenal (capsule) (cortex) (gland) (medullary)
• Disease, diseased › suprarenal (capsule) (gland)
• Disorder (of) › adrenal (capsule) (gland) (medullary)
• Dysadrenocortism
• Dysfunction › adrenal
• Dysfunction › suprarenal

Nearby codes

• E27.4 Other and unspecified adrenocortical insufficiency
• E27.40 Unspecified adrenocortical insufficiency
• E27.49 Other adrenocortical insufficiency
• E27.5 Adrenomedullary hyperfunction
• E27.8 Other specified disorders of adrenal gland
• E27.9 Disorder of adrenal gland, unspecified (this code)