ICD-10-CM 2027
ICD-10 code for Aldosteronoma
From the official ICD-10-CM alphabetic index entry “Aldosteronoma”. Page updated September 29, 2026.
About coding Aldosteronoma
The ICD-10-CM code for Aldosteronoma is D44.10 (Neoplasm of uncertain behavior of unspecified adrenal gland).
Within D44.1, choose D44.10 (unspecified adrenal gland) only when documentation doesn't support a more specific option: right adrenal gland (D44.11) and left adrenal gland (D44.12).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 643 (Endocrine Disorders with MCC, relative weight 1.6139), DRG 644 (Endocrine Disorders with CC, relative weight 1.0044) and DRG 645 (Endocrine Disorders without CC/MCC, relative weight 0.7459), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Aldosteronoma ICD-10 codes
What is the ICD-10 code for Aldosteronoma?
- D44.10 — Neoplasm of uncertain behavior of unspecified adrenal gland.
Is D44.10 billable?
- Yes. D44.10 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can D44.10 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict D44.10 as a principal diagnosis.
Is D44.10 a CC or MCC?
- No. D44.10 is neither a CC nor an MCC under MS-DRG v44.0.