T28.919 ICD-10-CM Code: Corrosions of unspecified ear drum

T28.919 is the ICD-10-CM diagnosis code for corrosions of unspecified ear drum. T28.919 sits in the ICD-10-CM chapter for injury, poisoning and certain other consequences of external causes (s00-t88), within the section covering burns and corrosions confined to eye and internal organs (t26-t28).

Header codes like T28.919 cannot be reported on claims directly, they organize child codes that share clinical context but the actual diagnosis must be coded to the highest level of specificity supported by the documentation. Coders should look at T28.919's child codes and select the one that matches the patient's documented presentation, since payers reject header codes submitted as the primary diagnosis. For risk adjustment workflows, header codes never contribute to a Medicare Advantage member's RAF score on their own; only billable child codes that happen to map to a payment HCC affect risk-adjusted plan payments.