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T21

Non-billable

Burn and corrosion of trunk

T21 is the ICD-10-CM code for Burn and corrosion of trunk. It is a non-billable category code — use a more specific child code such as T21.0 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Subcodes
8
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Includes

  • •burns and corrosion of hip region

Excludes2 — not included here

  • •burns and corrosion of axilla (T22.- with fifth character 4)
  • •burns and corrosion of scapular region (T22.- with fifth character 6)
  • •burns and corrosion of shoulder (T22.- with fifth character 5)

Frequently asked questions

What is ICD-10 code T21?
T21 is the ICD-10-CM code for "Burn and corrosion of trunk". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T21 a billable code?
No — T21 is a non-billable header code. Use a more specific child code (such as T21.0) for billing.
What are the subcodes of T21?
T21 has 8 more specific child codes, including T21.0, T21.1, T21.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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