2026 ICD-10-CM Diagnosis Code D17.21Benign lipomatous neoplasm of skin and subcutaneous tissue of right arm

ICD-10-CM Codes›C00–D49›D10-D36›D17

ICD-10-CM D17.21
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D17.21 is a billable ICD-10-CM diagnosis code for benign lipomatous neoplasm of skin and subcutaneous tissue of right arm. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. Coders also document this condition as benign lipomatous neoplasm of skin and/or subcutaneous tissue of left upper limb. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D17.21
Billable Status
Yes — Valid for Submission
Code Describes
Benign lipomatous neoplasm of skin and subcutaneous tissue of right arm
Short Description
Benign lipomatous neoplasm of skin, subcu of right arm
Parent Code
D17.2
Benign lipomatous neoplasm of skin and subcutaneous tissue of limb

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD17Benign lipomatous neoplasm
This CodeD17.21Benign lipomatous neoplasm of skin and subcutaneous tissue of right arm

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Benign lipomatous neoplasm of skin and/or subcutaneous tissue of left upper limb
  • Benign lipomatous neoplasm of skin and/or subcutaneous tissue of right upper limb
  • Bilateral benign lipomatous neoplasm of skin and/or subcutaneous tissue of upper limbs
  • Bilateral lipoma of upper limbs
  • Lipoma of left upper limb
  • Lipoma of right upper limb
  • Lipoma of upper limb

Clinical ClassificationClinical

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

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

Patient EducationClinical

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Read the full article at MedlinePlus

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

Convert D17.21 to ICD-9-CMHistory

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

ICD-9-CM
214.1 Lipoma skin NEC
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 D17.21Overview

Is D17.21 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report benign lipomatous neoplasm of skin and subcutaneous tissue of right arm on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D17.21 group to?

When benign lipomatous neoplasm of skin and subcutaneous tissue of right arm is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D17.21?

Under the General Equivalence Mappings, benign lipomatous neoplasm of skin and subcutaneous tissue of right arm converts to ICD-9-CM 214.1 (lipoma skin NEC). 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.