ICD-10-CM K20 is the diagnosis code for Esophagitis. This code falls under the section "Diseases of esophagus, stomach and duodenum" within Chapter 11 â Diseases of the digestive system (K00-K95). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as K20. They are mutually exclusive:
The following conditions are not included in K20. If the patient has both, code each condition separately:
Understanding where K20 sits in the ICD-10-CM classification helps ensure proper coding:
No, K20 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
K20 is the ICD-10-CM diagnosis code for "Esophagitis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
K20 is located in Section K20-K31 â "Diseases of esophagus, stomach and duodenum" within Chapter 11 of the ICD-10-CM Tabular List.
K20 has 3 sub-code(s) that provide more specific detail: K20.0, K20.8, K20.9.
Use K20 when the patients documented diagnosis matches "Esophagitis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Esophagitis is K20.
No, K20 is non-billable. Use a more specific sub-code for primary diagnosis billing.
K20 is in Chapter 11 of the ICD-10-CM Tabular List.
Type 1 Excludes for K20 include: erosion of esophagus (K22.1-); esophagitis with gastro-esophageal reflux disease (K21.0-); reflux esophagitis (K21.0-) and more.
Yes, K20 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.