K23
✓ Billable
Disorders of esophagus in diseases classified elsewhere
ICD-10-CM · FY2026 · Diseases of the Digestive System
Code
K23
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Digestive System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never code together
- late syphilis (A52.79)
- megaesophagus due to Chagas' disease (B57.31)
- tuberculosis (A18.83)
Code first
- underlying disease, such as:
- congenital syphilis (A50.5)
Frequently asked questions
What is ICD-10 code K23?
ICD-10-CM code K23 represents Disorders of esophagus in diseases classified elsewhere. It is a billable diagnosis code in the Diseases of the Digestive System chapter, effective October 1, 2025 – September 30, 2026.
Is K23 billable?
Yes. K23 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is K23 in?
K23 belongs to the Diseases of the Digestive System chapter (K00–K95) of ICD-10-CM.
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