T24.721Header code — not billable
Corrosion of third degree of right knee
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- T24
- Effective date
- October 1, 2026
Related codes in category T24
T24Burn and corrosion of lower limb, except ankle and footT24.0Burn of unsp degree of lower limb, except ankle and footT24.00Burn of unsp degree of unsp site lower limb, except ank/ftT24.001Burn unsp deg of unsp site right lower limb, except ank/ftT24.001ABurn unsp deg of unsp site right lower limb, ex ank/ft, initYesT24.001DBurn unsp deg of unsp site right lower limb, ex ank/ft, subsYesT24.001SBurn unsp deg of unsp site right lower limb, ex ank/ft, sqlaYesT24.002Burn unsp degree of unsp site left lower limb, except ank/ftT24.002ABurn unsp deg of unsp site left lower limb, ex ank/ft, initYesT24.002DBurn unsp deg of unsp site left lower limb, ex ank/ft, subsYesT24.002SBurn unsp deg of unsp site left lower limb, ex ank/ft, sqlaYesT24.009Burn unsp degree of unsp site unsp lower limb, except ank/ft
Frequently asked questions
What is ICD-10 code T24.721?
T24.721 is an ICD-10-CM diagnosis code for Corrosion of third degree of right knee.
Is T24.721 a billable code?
No. T24.721 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is T24.721 in?
T24.721 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T24.721 become effective?
T24.721 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T24.721?
T24.721 belongs to category T24, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.