K22.1 ICD-10-CA subcategory: Ulcer of oesophagus
K22.1 isn’t a code on its own. Choose one of the 9 codes beneath it, the one the documentation supports.
Official description
K22.1Ulcer of oesophagus
ICD-10-CA · Canada · Also written K221
Codes in K22.1
K22.1 isn’t a code on its own. Open the code that matches what the note documents.
K22.10Ulcer of oesophagus, acute with haemorrhageK22.11Ulcer of oesophagus, acute with perforationK22.12Ulcer of oesophagus, acute with both haemorrhage and perforationK22.13Ulcer of oesophagus, acute without haemorrhage or perforationK22.14Ulcer of oesophagus, chronic or unspecified with haemorrhageK22.15Ulcer of oesophagus, chronic or unspecified with perforationK22.16Ulcer of oesophagus, chronic or unspecified with both haemorrhage and perforationK22.17Ulcer of oesophagus, chronic without haemorrhage or perforationK22.19Ulcer of oesophagus, unspecified as acute or chronic, without haemorrhage or perforationNotes for K22.1
As CIHI prints them, with any note K22.1 takes from the headings above it.
Includes
- Barrett's ulcerErosion of oesophagusUlcer of oesophagus:• NOS• due to ingestion of:• chemicals• drugs and medicaments• fungal• pepticUlcerative oesophagitis
Use additional code
Add a code for this detail when the note documents it.
- Use additional external cause code (Chapter XX) to identify cause.
Excludes
Conditions classified elsewhere.
- Barrett's oesophagus (K22.7)
- Oesophageal varices (I85.-)From K22 Other diseases of oesophagus
- 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 K22.1 sits
- 1ChapterChapter 11: Diseases of the digestive system (K00-K93)
- 2Block K20-K31Diseases of oesophagus, stomach and duodenum
- 3Category K22Other diseases of oesophagus
- 4Subcategory K22.1Ulcer of oesophagus
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.
Frequently asked questions
Is K22.1 a valid ICD-10-CA code?
No. K22.1 (Ulcer of oesophagus) is a subcategory heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 9 codes; record the one the documentation supports.
Where is K22.1 in ICD-10-CA?
K22.1 sits under K22 Other diseases of oesophagus, within K20-K31 Diseases of oesophagus, stomach and duodenum, within Chapter 11: Diseases of the digestive system (K00-K93).
What coding notes apply to K22.1?
ICD-10-CA lists Includes, Use additional code, Excludes notes for K22.1, 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 K22.1
View K22K22.0Achalasia of cardiaK22.2Oesophageal obstructionK22.3Perforation of oesophagusK22.4Dyskinesia of oesophagusK22.5Diverticulum of oesophagus, acquiredK22.6Gastro-oesophageal laceration-haemorrhage syndromeK22.7Barrett's esophagusK22.8Other specified diseases of oesophagusK22.9Disease of oesophagus, unspecified