Billable / Specific Code
ICD-10-CM S21.159 is the diagnosis code for Open bite of unspecified front wall of thorax without 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 S21.159 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, S21.159 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
S21.159 is the ICD-10-CM diagnosis code for "Open bite of unspecified front wall of thorax without 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 S21.159 is S21.15 ("Open bite of front wall of thorax without penetration into thoracic cavity"). S21.159 provides a more specific classification within this category.
S21.159 is located in Section S20-S29 — "Injuries to the thorax" within Chapter 19 of the ICD-10-CM Tabular List.
S21.159 has 1918 sub-code(s) that provide more specific detail: A00, A01, A02, A03, A04 and more.
Use S21.159 when the patients documented diagnosis matches "Open bite of unspecified front wall of thorax without 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 front wall of thorax without penetration into thoracic cavity is S21.159.
Yes, S21.159 can be used as a primary diagnosis code since it is billable and specific.
S21.159 is in Chapter 19 of the ICD-10-CM Tabular List.
Yes, S21.159 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.