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K22.0 ICD-10-CA code: Achalasia of cardia

K22.0 is the ICD-10-CA code for “Achalasia of cardia” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

K22.0

Achalasia of cardia

ICD-10-CA · Canada · Also written K220

Index terms

Entries in CIHI’s alphabetical index that lead to K22.0. Searching the index by the condition the note names is how coders reach this code.

  • Megaesophagus (functional)
  • Megaloesophagus (functional)
  • Achalasia (cardia) (esophagus)
  • Spasm(s), spastic, spasticity, cardia
  • Cardiospasm (esophagus) (reflex) (stomach)

Notes for K22.0

As CIHI prints them, with any note K22.0 takes from the headings above it.

Includes

  • Achalasia NOSCardiospasm

Excludes

Conditions classified elsewhere.

  • Congenital cardiospasm (Q39.5)
  • 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 K22.0 sits

  1. 1ChapterChapter 11: Diseases of the digestive system (K00-K93)
  2. 2Block K20-K31Diseases of oesophagus, stomach and duodenum
  3. 3Category K22Other diseases of oesophagus
  4. 4Valid code K22.0Achalasia of cardia

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 K22.0 in the CIHI source

Frequently asked questions

What does ICD-10-CA code K22.0 mean?

K22.0 is the ICD-10-CA code for “Achalasia of cardia” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is K22.0 in ICD-10-CA?

K22.0 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 K22.0?

ICD-10-CA lists Includes, Excludes notes for K22.0, 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 K22.0

K22.1Ulcer of oesophagusK22.2Oesophageal 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