K31.8
Other specified diseases of stomach and duodenum
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
K31.8 is a non-billable ICD-10-CM code header for other specified diseases of stomach and duodenum. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are K31.81 Angiodysplasia of stomach and duodenum, K31.82 Dieulafoy lesion (hemorrhagic) of stomach and duodenum, K31.83 Achlorhydria, K31.84 Gastroparesis and 1 more. Its coding notes include 11 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Inherited from K31 Other diseases of stomach and duodenum
Also from chapter/block level (9 notes)
Inherited from Chapter 11 Diseases of the digestive system
- 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)
Includes
Further defines or gives examples of the content of the category.
Inherited from K31 Other diseases of stomach and duodenum
- functional disorders of stomach