K20.9 is the authoritative medical code for Esophagitis, unspecified. This classification is used in medical billing and clinical recording to specify the clinical criteria for esophagitis, unspecified (ICD-10-CM K20.9), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Sequencing, inclusion, and exclusion notes published for K20.9 in the official ICD-10-CM tabular list.
Conditions that can never be reported with this code; the two are mutually exclusive.
Conditions not covered by this code, but which may be reported alongside it when both are present.
Supplementary codes the tabular list directs you to add.
No. K20.9 (Esophagitis, unspecified) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Per Excludes1 instructions, K20.9 must not be reported with: erosion of esophagus (K22.1-); esophagitis with gastro-esophageal reflux disease (K21.0-); reflux esophagitis (K21.0-); ulcerative esophagitis (K22.1-).
Per Excludes2 instructions, K20.9 and the following may both be reported when both are present: eosinophilic gastritis or gastroenteritis (K52.81); hiatus hernia (K44.-).
Use additional code(s) to specify: code to identify:; alcohol abuse and dependence (F10.-).
Official ICD-10-CM classifications in the same code family as K20.9, with their registry titles.
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: