M89.5 vs T84.05
M89.5 (Osteolysis) compared with T84.05 (Periprosthetic osteolysis of internal prosthetic joint), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. M89.5 carries an Excludes2 note covering T84.05: “periprosthetic osteolysis of internal prosthetic joint (T84.05-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M89.5Osteolysis | T84.05Periprosthetic osteolysis of internal prosthetic joint | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header Report instead: T84.050A, T84.050D, T84.050S, T84.051A, T84.051D |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Osteolysis is a non-billable ICD-10-CM category code (M89.5). | Periprosthetic osteolysis of internal prosthetic joint is a non-billable ICD-10-CM category code (T84.05). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T84 |
| Use additional code | code to identify major osseous defect, if applicable (M89.7-) | code to identify major osseous defect, if applicable (M89.7-) 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 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources