2022 ICD-10-CM Diagnosis Code K31.A0

Gastric intestinal metaplasia, unspecified

    2022 - New Code Billable/Specific Code
  • K31.A0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • ICD-10-CM K31.A0 is a new 2022 ICD-10-CM code that became effective on October 1, 2021.
  • This is the American ICD-10-CM version of K31.A0 - other international versions of ICD-10 K31.A0 may differ.
Applicable To
  • Gastric intestinal metaplasia indefinite for dysplasia
  • Gastric intestinal metaplasia NOS
The following code(s) above K31.A0 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.A0:
  • K00-K95
    2022 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 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)
    Diseases of the digestive system
  • K20-K31
    2022 ICD-10-CM Range K20-K31

    Diseases of esophagus, stomach and duodenum

    Type 2 Excludes
    Diseases of esophagus, stomach and duodenum
  • K31
    ICD-10-CM Diagnosis Code K31

    Other diseases of stomach and duodenum

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    • functional disorders of stomach
    Type 2 Excludes
    Other diseases of stomach and duodenum
ICD-10-CM K31.A0 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
  • 392 Esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc
Code History
  • 2022 (effective 10/1/2021): New code

Diagnosis Index entries containing back-references to K31.A0:

ICD-10-CM Codes Adjacent To K31.A0
K31.8 Other specified diseases of stomach and duodenum
K31.81 Angiodysplasia of stomach and duodenum
K31.811 …… with bleeding
K31.819 …… without bleeding
K31.82 Dieulafoy lesion (hemorrhagic) of stomach and duodenum
K31.83 Achlorhydria
K31.84 Gastroparesis
K31.89 Other diseases of stomach and duodenum
K31.9 Disease of stomach and duodenum, unspecified
K31.A Gastric intestinal metaplasia
K31.A0 …… unspecified
K31.A1 Gastric intestinal metaplasia without dysplasia
K31.A11 …… involving the antrum
K31.A12 …… involving the body (corpus)
K31.A13 …… involving the fundus
K31.A14 …… involving the cardia
K31.A15 …… involving multiple sites
K31.A19 …… unspecified site
K31.A2 Gastric intestinal metaplasia with dysplasia
K31.A21 Gastric intestinal metaplasia with low grade dysplasia
K31.A22 Gastric intestinal metaplasia with high grade dysplasia

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.