2026 ICD-10-CM Diagnosis Code D26.1Other benign neoplasm of corpus uteri

ICD-10-CM Codes›C00–D49›D10-D36›D26

ICD-10-CM D26.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D26.1 is a billable ICD-10-CM diagnosis code for other benign neoplasm of corpus uteri. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 742 through 743, 760 through 761. Coders also document this condition as benign endometrial stromal neoplasm. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D26.1
Billable Status
Yes — Valid for Submission
Code Describes
Other benign neoplasm of corpus uteri
Short Description
Other benign neoplasm of corpus uteri
Same as the full description in the CMS dataset.
Parent Code
D26
Other benign neoplasms of uterus

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD26Other benign neoplasms of uterus
This CodeD26.1Other benign neoplasm of corpus uteri

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Benign endometrial stromal neoplasm
  • Benign neoplasm of body of uterus
  • Benign neoplasm of endometrium
  • Benign neoplasm of fundus uteri
  • Benign neoplasm of isthmus of uterus
  • Benign neoplasm of myometrium
  • Complex mixed and stromal malignant neoplasm of endometrium of corpus uteri
  • Endometrial stromal tumor
  • Neoplasm of fundus uteri
  • Neoplasm of isthmus of uterus

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Nodule(s), nodular
      • endometrial (stromal)

Clinical ClassificationClinical

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

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

Clinical InformationClinical

  • Myometrium

    the smooth muscle coat of the uterus, which forms the main mass of the organ.

Table of NeoplasmsClinical

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

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
corpus › uteriC54.9C79.82D07.0D26.1D39.0D49.59
corpus › uteri › isthmusC54.0C79.82D07.0D26.1D39.0D49.59
endometrium (gland) (stroma)C54.1C79.82D07.0D26.1D39.0D49.59
fundus › uterusC54.3C79.82D07.0D26.1D39.0D49.59
isthmus uteriC54.0C79.82D07.0D26.1D39.0D49.59
myometriumC54.2C79.82D07.0D26.1D39.0D49.59
stroma, endometrialC54.1C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › bodyC54.9C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › cornuC54.9C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › corpusC54.9C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › endometriumC54.1C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › fundusC54.3C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › isthmusC54.0C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › lower segmentC54.0C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › myometriumC54.2C79.82D07.0D26.1D39.0D49.59

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 D26.1 to ICD-9-CMHistory

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

ICD-9-CM
219.1 Benign neo corpus uteri
Exact Match The mapping is direct, with no qualifiers.

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 D26.1Overview

Is D26.1 (Other benign neoplasms of uterus) a billable code?

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

What MS-DRG does D26.1 group to?

When other benign neoplasm of corpus uteri is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 760, 761, with relative weights from 0.5696 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D26.1?

Under the General Equivalence Mappings, other benign neoplasm of corpus uteri converts to ICD-9-CM 219.1 (benign neo corpus uteri). The mapping is a direct match.

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.