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2. ICD-10 Codes
3. Chapter - S00-T88
4. Section - T20-T25
5. Category - T21
6. T21.4

T21.4 - Corrosion of unspecified degree of trunk

• Applicable to Corrosion of unspecified degree of trunk
• The 2025 edition of ICD10-CM T21.4 became effective on October 1, 2024.
• This is the American ICD10-CM version of T21.4 - other international versions of ICD10 T21.4 may differ.
• T21.4 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• T21.4 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.

Code Additional Code:

• external cause code to identify place (Y92)

codefirst

• (T51-T65) to identify chemical and intent

The following codes above T21.4 contain annotation back-references that may be applicable to T21.4:

• Chapter: S00-T88 - Injury, poisoning and certain other consequences of external causes
• Section: T20-T25 - Burns and corrosions of external body surface, specified by site
• Category: T21 - Burn and corrosion of trunk

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.