K31.89
Other diseases of stomach and duodenum
BillableComplete code, valid to report
K31.89 (also written K3189) is a billable ICD-10-CM diagnosis code for other diseases of stomach and duodenum. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 26 codes in category K31 (Other diseases of stomach and duodenum). The Alphabetic Index lists it under 79 entries. 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)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Gastrointestinal tract and Genitourinary system clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Includes
Further defines or gives examples of the content of the category.
Inherited from K31 Other diseases of stomach and duodenum
- functional disorders of stomach
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 79 entries
- Achylia gastrica
- Atonia, atony, atonic, stomach
- Calculus, calculi, calculous, stomach
- Congestion, congestive, duodenum
- Congestion, congestive, stomach
- Contraction (s), contracture, contracted, hourglass, stomach
- Contraction (s), contracture, contracted, stomach
- Contraction (s), contracture, contracted, stomach, hourglass
- Deformity, duodenal bulb
- Deformity, duodenum (congenital), acquired
- Deformity, pylorus (congenital), acquired
- Deformity, stomach (congenital), acquired
Show 67 more
- Degeneration, degenerative, stomach
- Dilatation, stomach
- Disease, diseased, duodenum, specified NEC
- Disease, diseased, Rossbach's (hyperchlorhydria)
- Disease, diseased, stomach, specified NEC
- Distension, distention, stomach
- Dysfunction, stomach
- Engorgement, stomach
- Fish hook stomach
- Gastroliths
- Gastromalacia
- Gastropathy, congestive portal (see also, Hypertension, portal)
- Gastropathy, portal hypertensive (see also, Hypertension, portal)
- Gastropathy, specified NEC
- Gastroptosis
- Gastrospasm (neurogenic) (reflex)
- Gastrostenosis
- Gastrosuccorrhea (continuous) (intermittent)
- Hourglass (contracture), stomach
- Hyperacidity (gastric)
- Hyperactive, hyperactivity, gastrointestinal
- Hyperactive, hyperactivity, stomach
- Hyperchlorhydria
- Hyperemia (acute) (passive), stomach
- Hypermobility, hypermotility, stomach
- Hypersecretion, gastric
- Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic), portal (due to chronic liver disease) (idiopathic), gastropathy
- Hypertony, hypertonia, hypertonicity, stomach
- Hypertrophy, hypertrophic, duodenum
- Hypertrophy, hypertrophic, stomach
- Hypoacidity, gastric
- Hypochlorhydria
- Hypomotility, gastrointestinal (tract)
- Hypomotility, stomach
- Indigestion (acid) (bilious) (functional), catarrhal
- Inertia, stomach
- Insufficiency, insufficient, pyloric
- Irritable, irritability, stomach
- Irritation, gastric
- Irritation, stomach
- Malfunction, gastroenteric
- Malposition, stomach
- Megalogastria (acquired)
- Necrosis, necrotic (ischemic), stomach
- Obstruction, obstructed, obstructive, stomach NEC
- Prolapse, prolapsed, gastric (mucosa)
- Prolapse, prolapsed, stomach
- Ptosis, gastric
- Ptosis, stomach
- Redundant, redundancy, pylorus
- Redundant, redundancy, stomach
- Reichmann's disease or syndrome
- Retention, gastric
- Rossbach's disease
- Rupture, ruptured, duodenal stump
- Rupture, ruptured, stomach (nontraumatic) (spontaneous)
- Sclerosis, sclerotic, stomach
- Softening, stomach
- Spasm (s), spastic, spasticity, gastrointestinal (tract)
- Spasm (s), spastic, spasticity, pylorus NEC, adult hypertrophic
- Spasm (s), spastic, spasticity, stomach
- Stricture, stomach
- Subacidity, gastric
- Syndrome, dumping (postgastrectomy), nonsurgical
- Tachygastria
- Volvulus (bowel) (colon) (intestine), stomach (due to absence of gastrocolic ligament)
- Vomiting, functional