Billable / Specific Code
ICD-10-CM T21.45 is the diagnosis code for Corrosion of unspecified degree of buttock. This code falls under the section "Burns and corrosions of external body surface, specified by site" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where T21.45 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, T21.45 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
T21.45 is the ICD-10-CM diagnosis code for "Corrosion of unspecified degree of buttock". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of T21.45 is T21.4 ("Corrosion of unspecified degree of trunk"). T21.45 provides a more specific classification within this category.
T21.45 is located in Section T20-T25 — "Burns and corrosions of external body surface, specified by site" within Chapter 19 of the ICD-10-CM Tabular List.
Use T21.45 when the patients documented diagnosis matches "Corrosion of unspecified degree of buttock" 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 Corrosion of unspecified degree of buttock is T21.45.
Yes, T21.45 can be used as a primary diagnosis code since it is billable and specific.
T21.45 is in Chapter 19 of the ICD-10-CM Tabular List.
Yes, T21.45 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.