S21.109D
✓ Billable
Unspecified open wound of unspecified front wall of thorax without penetration into thoracic cavity, subsequent encounter
ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes
Code
S21.109D
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code S21.109D?
ICD-10-CM code S21.109D represents Unspecified open wound of unspecified front wall of thorax without penetration into thoracic cavity, subsequent encounter. It is a billable diagnosis code in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is S21.109D billable?
Yes. S21.109D is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is S21.109D in?
S21.109D belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.
Related codes in the S21 category
S21
Open wound of thorax
Non-billable
S21.0
Open wound of breast
Non-billable
S21.1
Open wound of front wall of thorax without penetration into thoracic cavity
Non-billable
S21.2
Open wound of back wall of thorax without penetration into thoracic cavity
Non-billable
S21.3
Open wound of front wall of thorax with penetration into thoracic cavity
Non-billable
S21.4
Open wound of back wall of thorax with penetration into thoracic cavity
Non-billable
S21.9
Open wound of unspecified part of thorax
Non-billable
S21.00
Unspecified open wound of breast
Non-billable
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