T21.21
⚠ Non-billable
Burn of second degree of chest wall
ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes
Code
T21.21
System
ICD-10-CM
Billable
No — use specific code
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 T21.21?
ICD-10-CM code T21.21 represents Burn of second degree of chest wall. It is a non-billable header code requiring a more specific subcategory in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is T21.21 billable?
No. T21.21 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is T21.21 in?
T21.21 belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.
Related codes in the T21 category
T21
Burn and corrosion of trunk
Non-billable
T21.0
Burn of unspecified degree of trunk
Non-billable
T21.1
Burn of first degree of trunk
Non-billable
T21.2
Burn of second degree of trunk
Non-billable
T21.3
Burn of third degree of trunk
Non-billable
T21.4
Corrosion of unspecified degree of trunk
Non-billable
T21.5
Corrosion of first degree of trunk
Non-billable
T21.6
Corrosion of second degree of trunk
Non-billable
Search all 98,186 ICD-10-CM codes instantly
Search ICDwise →