2022 ICD-10-CM Code K31.89

Other diseases of stomach and duodenum

Version 2021
Replaced Code

Valid for Submission

ICD-10:K31.89
Short Description:Other diseases of stomach and duodenum
Long Description:Other diseases of stomach and duodenum

Code Classification

  • Diseases of the digestive system (K00–K93)
    • Diseases of esophagus, stomach and duodenum (K20-K31)
      • Other diseases of stomach and duodenum (K31)

K31.89 is a billable diagnosis code used to specify a medical diagnosis of other diseases of stomach and duodenum. The code K31.89 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.

The ICD-10-CM code K31.89 might also be used to specify conditions or terms like abnormal gastric motility, achylia gastrica, acquired deformity of abdomen, acquired deformity of duodenum, acquired megaduodenum , acute gastric ulcer with hemorrhage and obstruction, etc.

Replaced Code

This code was replaced in the 2022 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2021. This code was replaced for the FY 2022 (October 1, 2021 - September 30, 2022).


  • K31.A0 - Gastric intestinal metaplasia, unspecified
  • K31.A11 - Gastric intestnl metaplasia without dysplasia, w the antrum
  • K31.A12 - Gastr intestnl metaplasia w/o dysplasia, w the body (corpus)
  • K31.A13 - Gastric intestnl metaplasia without dysplasia, w the fundus
  • K31.A14 - Gastric intestnl metaplasia without dysplasia, w the cardia
  • K31.A15 - Gastric intestnl metaplasia without dysplasia, w mult sites
  • K31.A19 - Gastric intestinal metaplasia without dysplasia, unsp site
  • K31.A21 - Gastric intestinal metaplasia with low grade dysplasia
  • K31.A22 - Gastric intestinal metaplasia with high grade dysplasia
  • K31.A29 - Gastric intestinal metaplasia with dysplasia, unspecified

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code K31.89 are found in the index:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert K31.89 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code K31.89 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients


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.

Most people have a problem with their stomach at one time or another. Indigestion and heartburn are common problems. You can relieve some stomach problems with over-the-counter medicines and lifestyle changes, such as avoiding fatty foods or eating more slowly. Other problems like peptic ulcers or GERD require medical attention.

You should see a doctor if you have any of the following:

NIH: National Institute of Diabetes and Digestive and Kidney Diseases


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Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)