Other diseases of stomach and duodenum
Non-billable header
K31 is a non-billable header code. Use one of the more specific codes below.
Inclusion terms
Includes
- functional disorders of stomach
Excludes2
Not included here — may be reported together when both conditions exist.
- 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)
- hiatus hernia (K44.-)
- diabetic gastroparesis (E08.43, E09.43, E10.43, E11.43, E13.43)
- diverticulum of duodenum (K57.00-K57.13)
More specific codes K31
- K31.0Acute dilatation of stomachBillable
- K31.1Adult hypertrophic pyloric stenosisBillable
- K31.BHypertrophic pyloric stenosis, in childhoodBillable
- K31.2Hourglass stricture and stenosis of stomachBillable
- K31.3Pylorospasm, not elsewhere classifiedBillable
- K31.4Gastric diverticulumBillable
- K31.5Obstruction of duodenumBillable
- K31.6Fistula of stomach and duodenumBillable
- K31.7Polyp of stomach and duodenumBillable
- K31.8Other specified diseases of stomach and duodenumHeader
- K31.9Disease of stomach and duodenum, unspecifiedBillable
- K31.AGastric intestinal metaplasiaHeader
Related codes
- K20EsophagitisHeader
- K21Gastro-esophageal reflux diseaseHeader
- K22Other diseases of esophagusHeader
- K23Disorders of esophagus in diseases classified elsewhereBillable
- K25Gastric ulcerHeader
- K26Duodenal ulcerHeader
- K27Peptic ulcer, site unspecifiedHeader
- K28Gastrojejunal ulcerHeader
- K29Gastritis and duodenitisHeader
- K30Functional dyspepsiaBillable