K22.0 is the authoritative medical code for Achalasia of cardia. This classification is used in medical billing and clinical recording to specify the clinical criteria for achalasia of cardia (ICD-10-CM K22.0), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Achalasia of cardia is a billable ICD-10-CM diagnosis code K22.0. Inclusion terms: Achalasia NOS; Cardiospasm. Excludes1 (not coded here): congenital cardiospasm Q39.5. Excludes2 (not included here): esophageal varices I85.-; hiatus hernia K44.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for K22.0 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- congenital cardiospasm Q39.5
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- esophageal varices I85.-
- hiatus hernia K44.-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with K22.0?
Per Excludes1 instructions, K22.0 must not be reported with: congenital cardiospasm (Q39.5).
Can K22.0 be reported alongside related conditions?
Per Excludes2 instructions, K22.0 and the following may both be reported when both are present: esophageal varices (I85.-); hiatus hernia (K44.-).
What conditions are included under K22.0?
Achalasia of cardia includes: Achalasia NOS; Cardiospasm.
Codes in This Family (20)
Official ICD-10-CM classifications in the same code family as K22.0, with their registry titles.
- K22 — Other diseases of esophagus
- K22.1 — Ulcer of esophagus
- K22.10 — Ulcer of esophagus without bleeding
- K22.11 — Ulcer of esophagus with bleeding
- K22.2 — Esophageal obstruction
- K22.3 — Perforation of esophagus
- K22.4 — Dyskinesia of esophagus
- K22.5 — Diverticulum of esophagus, acquired
- K22.6 — Gastro-esophageal laceration-hemorrhage syndrome
- K22.7 — Barrett's esophagus
- K22.70 — Barrett's esophagus without dysplasia
- K22.71 — Barrett's esophagus with dysplasia
- K22.710 — Barrett's esophagus with low grade dysplasia
- K22.711 — Barrett's esophagus with high grade dysplasia
- K22.719 — Barrett's esophagus with dysplasia, unspecified
- K22.8 — Other specified diseases of esophagus
- K22.81 — Esophageal polyp
- K22.82 — Esophagogastric junction polyp
- K22.89 — Other specified disease of esophagus
- K22.9 — Disease of esophagus, unspecified
Indexed Clinical Terms (9)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Achalasia (cardia) (esophagus)
- Aperistalsis, esophagus
- Cardiospasm (esophagus) (reflex) (stomach)
- Dilatation, esophagus, due to achalasia
- Incompetency, incompetent, incompetence, esophagogastric (junction) (sphincter)
- Megaesophagus (functional)
- Megaloesophagus (functional)
- Spasm, spastic, spasticity (s), cardia
- Syndrome, gastroesophageal, junction
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: