T21.43XABillable
Corrosion of unspecified degree of upper back, initial encounter
Short description: Corrosion of unspecified degree of upper back, init encntr
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- T21
- Effective date
- October 1, 2026
Related codes in category T21
T21Burn and corrosion of trunkT21.0Burn of unspecified degree of trunkT21.00Burn of unspecified degree of trunk, unspecified siteT21.00XABurn of unsp degree of trunk, unspecified site, init encntrYesT21.00XDBurn of unsp degree of trunk, unspecified site, subs encntrYesT21.00XSBurn of unsp degree of trunk, unspecified site, sequelaYesT21.01Burn of unspecified degree of chest wallT21.01XABurn of unspecified degree of chest wall, initial encounterYesT21.01XDBurn of unspecified degree of chest wall, subs encntrYesT21.01XSBurn of unspecified degree of chest wall, sequelaYesT21.02Burn of unspecified degree of abdominal wallT21.02XABurn of unspecified degree of abdominal wall, init encntrYes
Frequently asked questions
What is ICD-10 code T21.43XA?
T21.43XA is an ICD-10-CM diagnosis code for Corrosion of unspecified degree of upper back, initial encounter.
Is T21.43XA a billable code?
Yes. T21.43XA is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is T21.43XA in?
T21.43XA falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T21.43XA become effective?
T21.43XA has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T21.43XA?
T21.43XA belongs to category T21, 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.