2026 ICD-10-CM Diagnosis Code D24.9Benign neoplasm of unspecified breast

ICD-10-CM Codes›C00–D49›D10-D36›D24

ICD-10-CM D24.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D24.9 is a billable ICD-10-CM diagnosis code for benign neoplasm of unspecified breast. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D24.9
Billable Status
Yes — Valid for Submission
Code Describes
Benign neoplasm of unspecified breast
Short Description
Benign neoplasm of unspecified breast
Same as the full description in the CMS dataset.
Parent Code
D24
Benign neoplasm of breast

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD24Benign neoplasm of breast
This CodeD24.9Benign neoplasm of unspecified breast

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Adenoma of nipple
  • Atypical hyperplasia of breast
  • Atypical intraductal papilloma of breast
  • Benign neoplasm of areola
  • Benign neoplasm of axillary tail of breast
  • Benign neoplasm of breast
  • Benign neoplasm of central portion of breast
  • Benign neoplasm of ectopic site of breast
  • Benign neoplasm of lower inner quadrant of breast
  • Benign neoplasm of lower outer quadrant of breast
  • Benign neoplasm of nipple
  • Benign neoplasm of upper inner quadrant of breast
  • Benign neoplasm of upper outer quadrant of breast
  • Benign phyllodes neoplasm of breast
  • Duct papilloma of breast
  • Fibroadenoma of breast
  • Giant fibroadenoma of breast
  • Juvenile fibroadenoma of breast
  • Juvenile papillomatosis of breast
  • Lactating adenoma of breast
  • Multiple fibroadenomas of breast
  • Neoplasm of areola
  • Neoplasm of ectopic site of breast
  • Papilloma of breast
  • Phyllodes tumor of breast
  • Tubular adenoma
  • Tubular adenoma of breast

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 D24.9 to ICD-9-CMHistory

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

ICD-9-CM
217 Benign neoplasm breast
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 D24.9Overview

Is D24.9 (Benign neoplasm of breast) a billable code?

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

What MS-DRG does D24.9 group to?

When benign neoplasm of unspecified breast 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 D24.9?

Under the General Equivalence Mappings, benign neoplasm of unspecified breast converts to ICD-9-CM 217 (benign neoplasm breast). 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.