ICD-10-CM Codes
K00-K95 Diseases of the digestive system
K20-K31 Diseases of esophagus, stomach and duodenum
K31- Other diseases of stomach and duodenum
2021 ICD-10-CM Diagnosis Code K31.89

2021 ICD-10-CM Diagnosis Code K31.89

Other diseases of stomach and duodenum

2016

2017

2018

2019

2020

2021

Billable/Specific Code

K31.89 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2021 edition of ICD-10-CM K31.89 became effective on October 1, 2020.
This is the American ICD-10-CM version of K31.89 - other international versions of ICD-10 K31.89 may differ.

The following code(s) above K31.89 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 K31.89:

K00-K95
2021 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
2021 ICD-10-CM Range K20-K31
Diseases of esophagus, stomach and duodenum
Type 2 Excludes
- hiatus hernia (K44.-)
Diseases of esophagus, stomach and duodenum
K31
ICD-10-CM Diagnosis Code K31
Other diseases of stomach and duodenum
Includes
- functional disorders of stomach
Type 2 Excludes
- diabetic gastroparesis (E08.43, E09.43, E10.43, E11.43, E13.43)
- diverticulum of duodenum (K57.00-K57.13)
Other diseases of stomach and duodenum

Approximate Synonyms

Disorder of function of stomach
Gastroptosis
Intestinal metaplasia of gastric mucosa
Portal hypertensive gastropathy
Stomach dysfunction

ICD-10-CM K31.89 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):

391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
392 Esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc

Convert K31.89 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
2021 (effective 10/1/2020): No change

Code annotations containing back-references to K31.89:

Type 1 Excludes: K31.2

ICD-10-CM Diagnosis Code K31.2
Hourglass stricture and stenosis of stomach
Type 1 Excludes
- congenital hourglass stomach (Q40.2)
- hourglass contraction of stomach (K31.89)
Use Additional: K76.6

ICD-10-CM Diagnosis Code K76.6
Portal hypertension
Use Additional
- code for any associated complications, such as:
- portal hypertensive gastropathy (K31.89)

Diagnosis Index entries containing back-references to K31.89:

Achylia gastrica K31.89
Atonia, atony, atonic
- stomach K31.89
Calculus, calculi, calculous
- stomach K31.89
Congestion, congestive
- duodenum K31.89
- stomach K31.89
Contraction(s)
- hourglass
  - stomach K31.89
- stomach K31.89
  - hourglass K31.89
Deformity Q89.9
ICD-10-CM Diagnosis Code Q89.9
Congenital malformation, unspecified
Applicable To
Congenital anomaly NOS
Congenital deformity NOS
- duodenum (congenital) Q43.9
  ICD-10-CM Diagnosis Code Q43.9
  Congenital malformation of intestine, unspecified
  2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
  - acquired K31.89
- pylorus (congenital) Q40.3
  ICD-10-CM Diagnosis Code Q40.3
  Congenital malformation of stomach, unspecified
  2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
  - acquired K31.89
- stomach (congenital) Q40.3
  ICD-10-CM Diagnosis Code Q40.3
  Congenital malformation of stomach, unspecified
  2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
  - acquired K31.89
- duodenal bulb K31.89
Degeneration, degenerative
- stomach K31.89
Dilatation
- stomach K31.89
Disease, diseased - see also Syndrome
- duodenum K31.9
  ICD-10-CM Diagnosis Code K31.9
  Disease of stomach and duodenum, unspecified
  2016 2017 2018 2019 2020 2021 Billable/Specific Code
  - specified NEC K31.89
- Rossbach's (hyperchlorhydria) K31.89
- stomach K31.9
  ICD-10-CM Diagnosis Code K31.9
  Disease of stomach and duodenum, unspecified
  2016 2017 2018 2019 2020 2021 Billable/Specific Code
  - specified NEC K31.89
Distension, distention
- stomach K31.89
Dysfunction
- stomach K31.89
Engorgement
- stomach K31.89
Fish hook stomach K31.89
Gastroliths K31.89
Gastromalacia K31.89
Gastropathy K31.9
ICD-10-CM Diagnosis Code K31.9
Disease of stomach and duodenum, unspecified
- congestive portal K31.89
- portal hypertensive K31.89
Gastroptosis K31.89
Gastrospasm (neurogenic) (reflex) K31.89
Gastrostenosis K31.89
Gastrosuccorrhea (continuous) (intermittent) K31.89
Hourglass (contracture) - see also Contraction, hourglass
- stomach K31.89
Hyperacidity (gastric) K31.89
Hyperactive, hyperactivity F90.9
ICD-10-CM Diagnosis Code F90.9
Attention-deficit hyperactivity disorder, unspecified type
Applicable To
Attention-deficit hyperactivity disorder of childhood or adolescence NOS
Attention-deficit hyperactivity disorder NOS
- gastrointestinal K31.89
- stomach K31.89
Hyperchlorhydria K31.89
Hyperemia (acute) (passive) R68.89
ICD-10-CM Diagnosis Code R68.89
Other general symptoms and signs
- stomach K31.89
Hypermobility, hypermotility
- stomach K31.89
Hypersecretion
- gastric K31.89
Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
ICD-10-CM Diagnosis Code I10
Essential (primary) hypertension
Includes
high blood pressure
hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
Type 1 Excludes
hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Type 2 Excludes
essential (primary) hypertension involving vessels of brain (I60-I69)
essential (primary) hypertension involving vessels of eye (H35.0-)
- portal (due to chronic liver disease) (idiopathic) K76.6
  ICD-10-CM Diagnosis Code K76.6
  Portal hypertension
  2016 2017 2018 2019 2020 2021 Billable/Specific Code
  Use Additional
  code for any associated complications, such as:
  portal hypertensive gastropathy (K31.89)
  - gastropathy K31.89
Hypertony, hypertonia, hypertonicity
- stomach K31.89
Hypertrophy, hypertrophic
- duodenum K31.89
- stomach K31.89
Hypoacidity, gastric K31.89
Hypochlorhydria K31.89
Hypomotility
- gastrointestinal (tract) K31.89
- stomach K31.89
Indigestion (acid) (bilious) (functional) K30
ICD-10-CM Diagnosis Code K30
Functional dyspepsia
Applicable To
Indigestion
Type 1 Excludes
dyspepsia NOS (R10.13)
heartburn (R12)
nervous dyspepsia (F45.8)
neurotic dyspepsia (F45.8)
psychogenic dyspepsia (F45.8)
- catarrhal K31.89
Inertia
- stomach K31.89
Insufficiency, insufficient
- pyloric K31.89
Irritable, irritability R45.4
ICD-10-CM Diagnosis Code R45.4
Irritability and anger
- stomach K31.89
Irritation
- gastric K31.89
- stomach K31.89
Malfunction - see also Dysfunction
- gastroenteric K31.89
Malposition
- stomach K31.89
Megalogastria (acquired) K31.89
Necrosis, necrotic (ischemic) - see also Gangrene
- stomach K31.89
Obstruction, obstructed, obstructive
- stomach NEC K31.89
Prolapse, prolapsed
- gastric K31.89 (mucosa)
- stomach K31.89
Ptosis - see also Blepharoptosis
- gastric K31.89
- stomach K31.89
Redundant, redundancy
- pylorus K31.89
- stomach K31.89
Reichmann's disease or syndrome K31.89
Retention - see also Retained
- gastric K31.89
Rossbach's disease K31.89
Rupture, ruptured
- stomach (nontraumatic) (spontaneous) K31.89
- duodenal stump K31.89
Sclerosis, sclerotic
- stomach K31.89
Softening
- stomach K31.89
Spasm(s) R25.2
- see also condition
ICD-10-CM Diagnosis Code R25.2
Cramp and spasm
Type 2 Excludes
carpopedal spasm (R29.0)
charley-horse (M62.831)
infantile spasms (G40.4-)
muscle spasm of back (M62.830)
muscle spasm of calf (M62.831)
- gastrointestinal (tract) K31.89
- pylorus NEC K31.3
  ICD-10-CM Diagnosis Code K31.3
  Pylorospasm, not elsewhere classified
  2016 2017 2018 2019 2020 2021 Billable/Specific Code
  Type 1 Excludes
  congenital or infantile pylorospasm (Q40.0)
  neurotic pylorospasm (F45.8)
  psychogenic pylorospasm (F45.8)
  - adult hypertrophic K31.89
- stomach K31.89
Stricture - see also Stenosis
- stomach K31.89
Subacidity, gastric K31.89
Syndrome - see also Disease
- dumping (postgastrectomy) K91.1
  ICD-10-CM Diagnosis Code K91.1
  Postgastric surgery syndromes
  2016 2017 2018 2019 2020 2021 Billable/Specific Code
  Applicable To
  Dumping syndrome
  Postgastrectomy syndrome
  Postvagotomy syndrome
  - nonsurgical K31.89
Tachygastria K31.89
Volvulus (bowel) (colon) (intestine) K56.2
ICD-10-CM Diagnosis Code K56.2
Volvulus
Applicable To
Strangulation of colon or intestine
Torsion of colon or intestine
Twist of colon or intestine
Type 2 Excludes
volvulus of duodenum (K31.5)
- stomach K31.89 (due to absence of gastrocolic ligament)
Vomiting R11.10
ICD-10-CM Diagnosis Code R11.10
Vomiting, unspecified
Applicable To
Vomiting NOS
- functional K31.89

ICD-10-CM Codes Adjacent To K31.89

K31.5 Obstruction of duodenum

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

K31.811 …… 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

K35 Acute appendicitis

K35.2 Acute appendicitis with generalized peritonitis

K35.20 …… without abscess

K35.21 …… with abscess

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

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

2021 ICD-10-CM Diagnosis Code K31.89

Other diseases of stomach and duodenum

Diseases of the digestive system

Diseases of esophagus, stomach and duodenum

Other diseases of stomach and duodenum

Hourglass stricture and stenosis of stomach

Portal hypertension

Congenital malformation, unspecified

Congenital malformation of intestine, unspecified

Congenital malformation of stomach, unspecified

Congenital malformation of stomach, unspecified

Disease of stomach and duodenum, unspecified

Disease of stomach and duodenum, unspecified

Disease of stomach and duodenum, unspecified

Attention-deficit hyperactivity disorder, unspecified type

Other general symptoms and signs

Essential (primary) hypertension

Portal hypertension

Functional dyspepsia

Irritability and anger

Cramp and spasm

Pylorospasm, not elsewhere classified

Postgastric surgery syndromes

Volvulus

Vomiting, unspecified