T84.022A vs T84.023A
T84.022A (Instability of internal right knee prosthesis, initial encounter) compared with T84.023A (Instability of internal left knee prosthesis, initial encounter), from the official CMS tabular data. T84.022A and T84.023A code the same condition on opposite sides.
Can these codes be reported together?
Same condition, opposite side. T84.022A and T84.023A name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
Side by side
| T84.022AInstability of internal right knee prosthesis, initial encounter | T84.023AInstability of internal left knee prosthesis, initial encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Instability of internal right knee prosthesis, initial encounter is a billable ICD-10-CM diagnosis code (T84.022A). | Instability of internal left knee prosthesis, initial encounter is a billable ICD-10-CM diagnosis code (T84.023A). |
| 7th character | The appropriate 7th character is to be added to each code from category T84 | The appropriate 7th character is to be added to each code from category T84 |
| Use additional code | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82) | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources