T84.50 — Infection and inflammatory reaction due to unspecified internal joint prosthesis
T84.50 is a non-billable header ICD-10-CM code for infection and inflammatory reaction due to unspecified internal joint prosthesis. 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
Risk adjustment
T84.50 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.
How T84.50 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to T84.50.
- Complication›joint prosthesis, internal›infection or inflammation
- Infection, infected, infective›joint NEC›due to internal joint prosthesis
Code to one of these instead T84.50
3 child codes. Green means billable.
- T84.50XAInfection and inflammatory reaction due to unspecified internal joint prosthesis, initial encounter
- T84.50XDInfection and inflammatory reaction due to unspecified internal joint prosthesis, subsequent encounter
- T84.50XSInfection and inflammatory reaction due to unspecified internal joint prosthesis, sequela
Related codes at this level
Codes that share T84.5. If T84.50 is not quite right, the correct code is usually one of these.
- T84.51Infection and inflammatory reaction due to internal right hip prosthesis
- T84.52Infection and inflammatory reaction due to internal left hip prosthesis
- T84.53Infection and inflammatory reaction due to internal right knee prosthesis
- T84.54Infection and inflammatory reaction due to internal left knee prosthesis
- T84.59Infection and inflammatory reaction due to other internal joint prosthesis
Questions about T84.50
- Is T84.50 a billable ICD-10-CM code?
- No. T84.50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T84.50 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).