2026 ICD-10-CM Diagnosis Code K31.7Polyp of stomach and duodenum
ICD-10-CM Codes›K00–K95›K20-K31›K31
- Billable — Valid for Submission
- Not Chronic
K31.7 is a billable ICD-10-CM diagnosis code for polyp of stomach and 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 and Other specified and unspecified disorders of stomach and duodenum.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Benign polyp of duodenum
- Duodenal polyposis
- Fundic gland polyposis of stomach
- Gastric adenocarcinoma and proximal polyposis of stomach
- Gastric polyp
- Gastric polyposis
- Hamartoma of stomach
- Hamartomatous polyp of stomach
- Hyperplastic duodenal polyp
- Hyperplastic polyp of intestine
- Hyperplastic polyp of small intestine
- Inflammatory fibroid polyps of stomach
- Polyp of duodenum
- Polyp of small intestine
- Solitary fundic gland polyp
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- adenomatous polyp of stomach D13.1
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.
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Polyp, polypus
- duodenum
- Polyp, polypus
- stomach
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Stomach Disorders
Your stomach is an organ between your esophagus and small intestine. It is where digestion of protein begins. The stomach has three tasks. It stores swallowed food. It mixes the food with stomach acids. Then it sends the mixture on to the small intestine.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert K31.7 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K31.7Overview
Is K31.7 (Other diseases of stomach and duodenum) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report polyp of stomach and duodenum on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K31.7 group to?
When polyp of stomach and 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 K31.7?
Under the General Equivalence Mappings, polyp of stomach and duodenum converts to ICD-9-CM 211.1 (benign neoplasm stomach). 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.
