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ICD-10-CM Code K31.9
Disease of stomach and duodenum, unspecified

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

K31.9 is a billable ICD code used to specify a diagnosis of disease of stomach and duodenum, unspecified. A 'billable code' is detailed enough to be used to specify a medical diagnosis.


The ICD code K31 is used to code Stomach disease

The stomach is an important organ in the body. It plays a vital role in digestion of foods, releases various enzymes and also protects the lower intestine from harmful organisms. The stomach connects to the esophagus above and to the small intestine below. It is intricately related to the pancreas, spleen and liver. The stomach does vary in size but its J shape is constant. The stomach lies in the upper part of the abdomen just below the left rib cage.

MeSH Code: D013272
ICD 9 Code: 536.750

The location of the stomach in the body.

Source: Wikipedia

MS-DRG Mapping

  • DRG Group #391-392 - Esophagitis, gastroent and misc digest disorders with MCC.
  • DRG Group #391-392 - Esophagitis, gastroent and misc digest disorders without MCC.

Related Concepts SNOMET-CT

  • Functional disorder of stomach (disorder)
  • Non-steroidal anti-inflammatory drug-associated gastropathy (disorder)

Coding Advice SNOMET-CT

  • Possible requirement for an external cause code

ICD-10-CM Alphabetical Index References for 'K31.9 - Disease of stomach and duodenum, unspecified'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code K31.9. Click on any term below to browse the alphabetical index.

Equivalent ICD-9 Codes GENERAL EQUIVALENCE MAPPINGS (GEM)

Unspecified functional disorder of stomach (approximate match)
Unspecified disorder of stomach and duodenum (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code K31.9 and a single ICD9 code, 537.9 is an approximate match for comparison and conversion purposes.


Parent Code: K31 - Other diseases of stomach and duodenum

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/K319