ICD-10-CM T21.7: Corrosion of third degree of trunk

ICD-10-CM Diagnosis Code (2025)

Official Description for T21.7

Corrosion of third degree of trunk

Coding Notes & Guidelines for T21.7

Excludes2: Not Included Here

corrosion of vagina (T28.8)

Code First

(T51-T65) to identify chemical and intent

Use Additional Code

external cause code to identify place (Y92)

Inclusion Terms

Corrosion of third degree of breast

Inclusion Terms
  • Corrosion of third degree of flank
  • Corrosion of third degree of groin
Inclusion Terms

Corrosion of third degree of interscapular region

Inclusion Terms

Corrosion of third degree of anus

Inclusion Terms
  • Corrosion of third degree of penis
  • Corrosion of third degree of scrotum
  • Corrosion of third degree of testis
Inclusion Terms
  • Corrosion of third degree of labium (majus) (minus)
  • Corrosion of third degree of perineum
  • Corrosion of third degree of vulva

Parent Code (Less Specific):

About ICD-10-CM Code T21.7 (Corrosion of third degree of trunk)

ICD-10-CM code T21.7 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM T21.7 became effective on October 1, 2024.

This page provides detailed information about T21.7 - Corrosion of third degree of trunk. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Corrosion of third degree of trunk.