T84.2 — Mechanical complication of internal fixation device of other bones
T84.2 is a non-billable header ICD-10-CM code for mechanical complication of internal fixation device of other bones. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T84
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes2 inherited from the categories above T84.2
Also inherited, and the opposite of Excludes1: these conditions are not part of T84.2, but a patient can have both, so you may code both.
Other codes that can never be billed with T84.2
These codes carry an Excludes1 note pointing at T84.2. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T84.2 alone.
- T85.612Breakdown (mechanical) of permanent sutures
- T85.622ADisplacement of permanent sutures, initial encounter
- T85.612ABreakdown (mechanical) of permanent sutures, initial encounter
- T85.612DBreakdown (mechanical) of permanent sutures, subsequent encounter
- T85.612SBreakdown (mechanical) of permanent sutures, sequela
- T85.622Displacement of permanent sutures
- T85.622DDisplacement of permanent sutures, subsequent encounter
- T85.622SDisplacement of permanent sutures, sequela
Risk adjustment
T84.2 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code history
T84.2 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead T84.2
3 child codes. Green means billable.
Related codes at this level
Codes that share T84. If T84.2 is not quite right, the correct code is usually one of these.
- T84.0Mechanical complication of internal joint prosthesis
- T84.1Mechanical complication of internal fixation device of bones of limb
- T84.3Mechanical complication of other bone devices, implants and grafts
- T84.4Mechanical complication of other internal orthopedic devices, implants and grafts
- T84.5Infection and inflammatory reaction due to internal joint prosthesis
- T84.6Infection and inflammatory reaction due to internal fixation device
- T84.7Infection and inflammatory reaction due to other internal orthopedic prosthetic devices, implants and grafts
- T84.8Other specified complications of internal orthopedic prosthetic devices, implants and grafts
- T84.9Unspecified complication of internal orthopedic prosthetic device, implant and graft
Questions about T84.2
- Is T84.2 a billable ICD-10-CM code?
- No. T84.2 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T84.2 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Complications of surgical and medical care, not elsewhere classified (T80-T88).