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K31.5 ICD-10-CA code: Obstruction of duodenum

K31.5 is the ICD-10-CA code for “Obstruction of duodenum” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

K31.5

Obstruction of duodenum

ICD-10-CA · Canada · Also written K315

Index terms

Entries in CIHI’s alphabetical index that lead to K31.5. Searching the index by the condition the note names is how coders reach this code.

  • Stasis, duodenal
  • Stricture, duodenum
  • Constriction, duodenum
  • Stenosis (cicatricial), duodenum
  • Scar, scarring, duodenum, obstructive
  • Syndrome, aortomesenteric duodenum occlusion
  • Obstruction, obstructed, obstructive, duodenum
  • Ileus (bowel) (colon) (inhibitory) (intestine), duodenal (chronic)
  • Cicatrix (adherent) (contracted) (painful) (vicious), duodenum (bulb), obstructive

Notes for K31.5

As CIHI prints them, with any note K31.5 takes from the headings above it.

Includes

Excludes

Conditions classified elsewhere.

  • Congenital stenosis of duodenum (Q41.0)
  • Diverticulum of duodenum (K57.0-K57.1)gastrointestinal haemorrhage (K92.0-K92.2)From K31 Other diseases of stomach and duodenum
  • Hiatus hernia (K44.-)From K20-K31 Diseases of oesophagus, stomach and duodenum
  • Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 11: Diseases of the digestive system (K00-K93)

Where K31.5 sits

  1. 1ChapterChapter 11: Diseases of the digestive system (K00-K93)
  2. 2Block K20-K31Diseases of oesophagus, stomach and duodenum
  3. 3Category K31Other diseases of stomach and duodenum
  4. 4Valid code K31.5Obstruction of duodenum

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See K31.5 in the CIHI source

Frequently asked questions

What does ICD-10-CA code K31.5 mean?

K31.5 is the ICD-10-CA code for “Obstruction of duodenum” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is K31.5 in ICD-10-CA?

K31.5 sits under K31 Other diseases of stomach and duodenum, within K20-K31 Diseases of oesophagus, stomach and duodenum, within Chapter 11: Diseases of the digestive system (K00-K93).

What coding notes apply to K31.5?

ICD-10-CA lists Includes, Excludes notes for K31.5, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside K31.5

K31.0Acute dilatation of stomachK31.1Adult hypertrophic pyloric stenosisK31.2Hourglass stricture and stenosis of stomachK31.3Pylorospasm, not elsewhere classifiedK31.4Gastric diverticulumK31.6Fistula of stomach and duodenumK31.7Polyp of stomach and duodenumK31.8Other specified diseases of stomach and duodenumK31.9Disease of stomach and duodenum, unspecified