K22.1

ICD-10Non-billable category

Ulcer of esophagus

Official ICD-10-CM descriptor (FY2026)

Ulcer of esophagus

K22.1 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Inclusion terms

  • Barrett's ulcer
  • Erosion of esophagus
  • Fungal ulcer of esophagus
  • Peptic ulcer of esophagus
  • Ulcer of esophagus due to ingestion of chemicals
  • Ulcer of esophagus due to ingestion of drugs and medicaments
  • Ulcerative esophagitis

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • Barrett's esophagus (K22.7-)

Code first

Sequence the underlying condition before this code.

  • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)

Use additional code

Report an additional code to identify the associated condition.

  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

ICD-10-CM FY2026 defines 2 codes beneath K22.1. See the ICD-10-CM index for what this site publishes.

Related codes in K22

Where this code sits

Parent code
K22

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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