2026 ICD-10-CM Diagnosis Code D35.02Benign neoplasm of left adrenal gland

ICD-10-CM Codes›C00–D49›D10-D36›D35

ICD-10-CM D35.02
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D35.02 is a billable ICD-10-CM diagnosis code for benign neoplasm of left adrenal gland. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 643 through 645. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D35.02
Billable Status
Yes — Valid for Submission
Code Describes
Benign neoplasm of left adrenal gland
Short Description
Benign neoplasm of left adrenal gland
Same as the full description in the CMS dataset.
Parent Code
D35.0
Benign neoplasm of adrenal gland

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD35Benign neoplasm of other and unspecified endocrine glands
This CodeD35.02Benign neoplasm of left adrenal gland

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Adenoma of left adrenal gland
  • Adenoma of right adrenal gland
  • Adrenal adenoma
  • Benign neoplasm of adrenal medulla
  • Benign neoplasm of left adrenal gland
  • Benign neoplasm of right adrenal gland
  • Benign pheochromocytoma
  • Benign pheochromocytoma of left adrenal gland
  • Benign pheochromocytoma of right adrenal gland
  • Bilateral adenoma of adrenal glands
  • Bilateral benign neoplasm of adrenal glands
  • Bilateral benign pheochromocytoma of adrenal glands
  • Bilateral mass of adrenal glands

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO073
Benign neoplasms
Default principal diagnosis: inpatient Yes · outpatient Yes

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
adrenalC74.9C79.7D09.3D35.0D44.1D49.7
adrenal › capsuleC74.9C79.7D09.3D35.0D44.1D49.7
adrenal › cortexC74.0C79.7D09.3D35.0D44.1D49.7
adrenal › glandC74.9C79.7D09.3D35.0D44.1D49.7
adrenal › medullaC74.1C79.7D09.3D35.0D44.1D49.7
cortexC74.0C79.7D09.3D35.0D44.1D49.7
cortex › adrenalC74.0C79.7D09.3D35.0D44.1D49.7
medullaC74.1C79.7D09.3D35.0D44.1D49.7
medulla › adrenalC74.1C79.7D09.3D35.0D44.1D49.7
suprarenalC74.9C79.7D09.3D35.0D44.1D49.7
suprarenal › capsuleC74.9C79.7D09.3D35.0D44.1D49.7
suprarenal › cortexC74.0C79.7D09.3D35.0D44.1D49.7
suprarenal › glandC74.9C79.7D09.3D35.0D44.1D49.7
suprarenal › medullaC74.1C79.7D09.3D35.0D44.1D49.7

Patient EducationClinical

Adrenal Gland Disorders

Your adrenal glands are two small organs that sit on top of each kidney. The adrenal glands make different types of hormones you need to stay alive and healthy. Hormones are chemicals that travel in your bloodstream and control how different parts of your body work.

The full article covers:

  • What are adrenal glands?
  • What are adrenal gland disorders?
  • What causes adrenal gland disorders?
  • How are adrenal gland disorders diagnosed?
  • What are the treatments for adrenal gland disorders?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert D35.02 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
227.0 Benign neoplasm adrenal
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D35.02Overview

Is D35.02 (Benign neoplasm of adrenal gland) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report benign neoplasm of left adrenal gland on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D35.02 group to?

When benign neoplasm of left adrenal gland is the principal diagnosis on an inpatient stay, it groups to MS-DRG 643, 644, 645, with relative weights from 0.7683 to 1.6461 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D35.02?

Under the General Equivalence Mappings, benign neoplasm of left adrenal gland converts to ICD-9-CM 227.0 (benign neoplasm adrenal). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.