2026 ICD-10-CM Diagnosis Code D3A.029Benign carcinoid tumor of the large intestine, unspecified portion

ICD-10-CM Codes›C00–D49›D3A›D3A

ICD-10-CM D3A.029
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D3A.029 is a billable ICD-10-CM diagnosis code for benign carcinoid tumor of the large intestine, unspecified portion. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 393 through 395. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D3A.029
Billable Status
Yes — Valid for Submission
Code Describes
Benign carcinoid tumor of the large intestine, unspecified portion
Short Description
Benign carcinoid tumor of the large intestine, unsp portion
Parent Code
D3A.02
Benign carcinoid tumors of the appendix, large intestine, and rectum

Code Classification

ChapterC00–D49Neoplasms
SectionD3ABenign neuroendocrine tumors
CategoryD3ABenign neuroendocrine tumors
This CodeD3A.029Benign carcinoid tumor of the large intestine, unspecified portion

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Benign carcinoid tumor of the colon NOS

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.

    • Tumor
      • carcinoid
        • benign
          • colon
    • Tumor
      • carcinoid
        • benign
          • large intestine

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 D3A.029 to ICD-9-CMHistory

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

ICD-9-CM
209.50 Ben crcnoid lg intst NOS
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 D3A.029Overview

Is D3A.029 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report benign carcinoid tumor of the large intestine, unspecified portion on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D3A.029 group to?

When benign carcinoid tumor of the large intestine, unspecified portion is the principal diagnosis on an inpatient stay, it groups to MS-DRG 393, 394, 395, with relative weights from 0.6490 to 1.5993 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D3A.029?

Under the General Equivalence Mappings, benign carcinoid tumor of the large intestine, unspecified portion converts to ICD-9-CM 209.50 (ben crcnoid lg intst NOS). 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.