T24.421SBillable
Corrosion of unspecified degree of right knee, sequela
- 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 T24.421S?
T24.421S is an ICD-10-CM diagnosis code for Corrosion of unspecified degree of right knee, sequela.
Is T24.421S a billable code?
Yes. T24.421S is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is T24.421S in?
T24.421S falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T24.421S become effective?
T24.421S has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T24.421S?
T24.421S 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.