2026 ICD-10-CM Diagnosis Code D13.2Benign neoplasm of duodenum
ICD-10-CM Codes›C00–D49›D10-D36›D13
- Billable — Valid for Submission
- Not Chronic
D13.2 is a billable ICD-10-CM diagnosis code for benign neoplasm of duodenum. 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
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Adenoma of duodenum
- Adenoma of small intestine
- Benign epithelial neoplasm of duodenum
- Benign gastrointestinal stromal neoplasm of duodenum
- Benign gastrointestinal stromal neoplasm of small intestine
- Benign mesenchymoma of duodenum
- Benign mesenchymoma of small intestine
- Benign neoplasm of duodenum
- Benign neoplasm of esophagus, stomach and/or duodenum
- Benign stromal neoplasm of gastrointestinal tract
- Benign tubular adenoma of duodenum
- Benign tubular adenoma of small intestine
- Brunner's gland adenoma
- Gangliocytic paraganglioma
- Gastroduodenal disorder
- Gastrointestinal stromal neoplasm of duodenum
- Gastrointestinal stromal tumor of small intestine
- Leiomyoma of duodenum
- Leiomyoma of small intestine
- Low grade glandular intraepithelial neoplasia of duodenum
- Low grade glandular intraepithelial neoplasia of small intestine
- Neoplasm of duodenal submucosa
- Neoplasm of gastrointestinal submucosa
- Neoplasm of submucosa of intestine
- Neoplasm of uncertain behavior of paraganglia
- Paraganglioma
- Tubular adenoma
- Villous adenoma of duodenum
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- benign carcinoid tumor of the duodenum D3A.010
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Paraganglioma - D44.7
- gangliocytic - D13.2
- unspecified site - D13.2
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Paraganglioma
- gangliocytic
- Paraganglioma
- gangliocytic
- unspecified site
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Duodenal Neoplasms
tumors or cancer of the duodenum.Duodenum
the shortest and widest portion of the small intestine adjacent to the pylorus of the stomach. it is named for having the length equal to about the width of 12 fingers.Carotid Body Tumor
benign paraganglioma at the bifurcation of the common carotid arteries. it can encroach on the parapharyngeal space and produce dysphagia, pain, and cranial nerve palsies.Glomus Jugulare Tumor
a paraganglioma involving the glomus jugulare, a microscopic collection of chemoreceptor tissue in the adventitia of the bulb of the jugular vein. it may cause paralysis of the vocal cords, attacks of dizziness, blackouts, and nystagmus. it is not resectable but radiation therapy is effective. it regresses slowly, but permanent control is regularly achieved. (from dorland, 27th ed; stedman, 25th ed; devita jr et al., cancer: principles & practice of oncology, 3d ed, pp1603-4)Paraganglioma
a neural crest tumor usually derived from the chromoreceptor tissue of a paraganglion, such as the carotid body, or medulla of the adrenal gland (usually called a chromaffinoma or pheochromocytoma). it is more common in women than in men. (stedman, 25th ed; from segen, dictionary of modern medicine, 1992)Paraganglioma, Extra-Adrenal
a relatively rare, usually benign neoplasm originating in the chemoreceptor tissue of the carotid body; glomus jugulare; glomus tympanicum; aortic bodies; and the female genital tract. it consists histologically of rounded or ovoid hyperchromatic cells that tend to be grouped in an alveolus-like pattern within a scant to moderate amount of fibrous stroma and a few large thin-walled vascular channels. (from stedman, 27th ed)Carotid Artery, Common
the two principal arteries supplying the structures of the head and neck. they ascend in the neck, one on each side, and at the level of the upper border of the thyroid cartilage, each divides into two branches, the external (carotid artery, external) and internal (carotid artery, internal) carotid arteries.
Table of NeoplasmsClinical
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 D13.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D13.2Overview
Is D13.2 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report benign neoplasm of duodenum on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does D13.2 group to?
When benign neoplasm of duodenum 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 D13.2?
Under the General Equivalence Mappings, benign neoplasm of duodenum converts to ICD-9-CM 211.2 (benign neoplasm sm bowel). 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.
