Billable / Specific Code
ICD-10-CM S21.459 is the diagnosis code for Open bite of unspecified back wall of thorax with penetration into thoracic cavity. This code falls under the section "Injuries to the thorax" 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.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where S21.459 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, S21.459 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
S21.459 is the ICD-10-CM diagnosis code for "Open bite of unspecified back wall of thorax with penetration into thoracic cavity". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of S21.459 is S21.45 ("Open bite of back wall of thorax with penetration into thoracic cavity"). S21.459 provides a more specific classification within this category.
S21.459 is located in Section S20-S29 — "Injuries to the thorax" within Chapter 19 of the ICD-10-CM Tabular List.
Use S21.459 when the patients documented diagnosis matches "Open bite of unspecified back wall of thorax with penetration into thoracic cavity" 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 Open bite of unspecified back wall of thorax with penetration into thoracic cavity is S21.459.
Yes, S21.459 can be used as a primary diagnosis code since it is billable and specific.
S21.459 is in Chapter 19 of the ICD-10-CM Tabular List.
Yes, S21.459 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.