Reserved for future guideline expansion
K31.89
BookmarkOther diseases of stomach and duodenum
Filed alongside this entry 15
under Ptosis
- breast N64.81
- brow H57.81
- cecum K63.4
- colon K63.4
- congenital (eyelid) Q10.0
- eyebrow H57.81
- gastric K31.89
- intestine K63.4
- kidney N28.83
- liver K76.89
- renal N28.83
- splanchnic K63.4
- spleen D73.89
- stomach K31.89
- viscera K63.4
Index entries, exactly as the book files them. This says they are listed together — not that any of them is documented in your chart.
Billable FY2027 2026-10-01 → 2027-09-30
How to use this page
Everything the published sources say about one code, on one page.
- Read the Excludes1 block first — it is the one that stops you coding this at all alongside another code.
- Excludes2, Code first, Use additional and Includes follow. A note inherited from a parent category is labelled with the category it came from, so you can see why it applies.
- Official Guidelines sit below. "Guidelines naming this code" cite the code or a range containing it; "Chapter guidance" is the general guidance for its chapter and is the weaker signal.
- Guideline text is quoted verbatim with its section number and page, so you can check it against the published document.
- Risk-model chips show which published CMS models map this code.
What this page does not do
- Guidance is quoted, never paraphrased — a paraphrase of a coding rule is a different rule.
- Medication candidates, where shown, are matched by condition *name* and are offered as candidates for you to judge. They are not "the drugs for this code".
Exclusions11never code together
K31code
K00-K95chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes1
K31code
Includes
- functional disorders of stomach
Official Guidelines1names this code
ICD-10-CM Official Guidelines for Coding and Reporting, quoted in full. Published by CMS and NCHS; in the public domain.
Index entries leading here59
- Achylia gastrica K31.89
- Deformity Q89.9
- Spasm (s) , spastic, spasticity R25.2
- Atonia, atony, atonic
- stomach K31.89
- Calculus, calculi, calculous
- stomach K31.89
- Indigestion (acid) (bilious) (functional) K30
- catarrhal K31.89
- Congestion, congestive
- Gastropathy K31.9
- Contraction (s) , contracture, contracted
- Degeneration, degenerative
- stomach K31.89
- Dilatation
- stomach K31.89
- Disease, diseased — see also Syndrome
- Distension, distention
- stomach K31.89
- Syndrome — see also Disease
- Rupture, ruptured
- Hypertrophy, hypertrophic
- Dysfunction
- stomach K31.89
- Engorgement
- stomach K31.89
- Fish hook stomach K31.89
- Vomiting R11.10
- functional K31.89
- Retention — see also Retained
- gastric K31.89
- Ptosis — see also Blepharoptosis
- Irritation
- Hypersecretion
- gastric K31.89
- Prolapse, prolapsed
- Malfunction — see also Dysfunction
- gastroenteric K31.89
- Hyperactive, hyperactivity F90.9
- Hypomotility
- Gastroliths K31.89
- Gastromalacia K31.89
- Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) I10
- 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
- Hyperchlorhydria K31.89
- Hyperemia (acute) (passive) R68.89
- stomach K31.89
- Hypermobility, hypermotility
- stomach K31.89
- Hypertony, hypertonia, hypertonicity
- stomach K31.89
- Hypoacidity, gastric K31.89
- Hypochlorhydria K31.89
- Inertia
- stomach K31.89
- Insufficiency, insufficient
- pyloric K31.89
- Irritable, irritability R45.4
- stomach 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
- Redundant, redundancy
- Reichmann's disease or syndrome K31.89
- Rossbach's disease K31.89
- Sclerosis, sclerotic
- stomach K31.89
- Softening
- stomach K31.89
- Stricture — see also Stenosis
- stomach K31.89
- Volvulus (bowel) (colon) (intestine) K56.2
- stomach (due to absence of gastrocolic ligament) K31.89
- Subacidity, gastric K31.89
- Tachygastria K31.89
Alongside this code4same parent — K31.8
Medications1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.