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ICD-10-CM Codes
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K00-K95
Diseases of the digestive system
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K20-K31
Diseases of esophagus, stomach and duodenum
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K31-
Other diseases of stomach and duodenum
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2020 ICD-10-CM Diagnosis Code K31.9
Disease of stomach and duodenum, unspecified
2016 2017 2018 2019 2020 Billable/Specific Code
- K31.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2020 edition of ICD-10-CM K31.9 became effective on October 1, 2019.
- This is the American ICD-10-CM version of K31.9 - other international versions of ICD-10 K31.9 may differ.
The following code(s) above
K31.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
K31.9:
- K00-K95
2020 ICD-10-CM Range K00-K95
Diseases of the digestive systemType 2 Excludes- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- K20-K31
2020 ICD-10-CM Range K20-K31
Diseases of esophagus, stomach and duodenum
- K31
ICD-10-CM Diagnosis Code K31
Other diseases of stomach and duodenum
2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
Includes- functional disorders of stomach
- Disorder of stomach
- Duodenal mass
- Functional disorder of stomach
- Gastric (stomach) mass
- Gastroduodenal disorder
- Gastropathy
- Mass of duodenum
- Mass of stomach
ICD-10-CM K31.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
- 391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
- 392 Esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc
Convert K31.9 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To K31.9
K31.6 Fistula of stomach and duodenum
K31.7 Polyp of stomach and duodenum
K31.8 Other specified diseases of stomach and duodenum
K31.81 Angiodysplasia of stomach and duodenum
K31.82 Dieulafoy lesion (hemorrhagic) of stomach and duodenum
K31.89 Other diseases of stomach and duodenum
K31.9
Disease of stomach and duodenum, unspecified
K35.2 Acute appendicitis with generalized peritonitis
K35.3 Acute appendicitis with localized peritonitis
K35.30 …… without perforation or gangrene
K35.31 …… and gangrene, without perforation
K35.32 Acute appendicitis with perforation and localized peritonitis, without abscess
K35.33 Acute appendicitis with perforation and localized peritonitis, with abscess
K35.8 Other and unspecified acute appendicitis
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
