T84.023Header code — not billable
Instability of internal left knee prosthesis
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- T84
- Effective date
- October 1, 2026
Related codes in category T84
T84Complications of internal orthopedic prosth dev/grftT84.0Mechanical complication of internal joint prosthesisT84.01Broken internal joint prosthesisT84.010Broken internal right hip prosthesisT84.010ABroken internal right hip prosthesis, initial encounterYesT84.010DBroken internal right hip prosthesis, subsequent encounterYesT84.010SBroken internal right hip prosthesis, sequelaYesT84.011Broken internal left hip prosthesisT84.011ABroken internal left hip prosthesis, initial encounterYesT84.011DBroken internal left hip prosthesis, subsequent encounterYesT84.011SBroken internal left hip prosthesis, sequelaYesT84.012Broken internal right knee prosthesis
Frequently asked questions
What is ICD-10 code T84.023?
T84.023 is an ICD-10-CM diagnosis code for Instability of internal left knee prosthesis.
Is T84.023 a billable code?
No. T84.023 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 T84.023 in?
T84.023 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T84.023 become effective?
T84.023 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T84.023?
T84.023 belongs to category T84, 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.