T84.09
Other mechanical complication of internal joint prosthesis
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 4 never code together
T84code
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 4
T84.09code
Inclusion terms
- Prosthetic joint implant failure NOS
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 1
Alongside this code 5 same parent — T84.0
T84.01 Broken internal joint prosthesis category T84.02 Dislocation of internal joint prosthesis category T84.03 Mechanical loosening of internal prosthetic joint category T84.05 Periprosthetic osteolysis of internal prosthetic joint category T84.06 Wear of articular bearing surface of internal prosth joint category
Subordinate codes 6
T84.090 Mech compl of internal right hip prosthesis T84.091 Mech compl of internal left hip prosthesis T84.092 Mech compl of internal right knee prosthesis T84.093 Mech compl of internal left knee prosthesis T84.098 Mech compl of other internal joint prosthesis T84.099 Mech compl of unspecified internal joint prosthesis
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.