M00 vs T84.5
M00 (Pyogenic arthritis) compared with T84.5 (Infection and inflammatory reaction due to internal joint prosthesis), 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. M00 carries an Excludes2 note covering T84.5: “infection and inflammatory reaction due to internal joint prosthesis (T84.5-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M00Pyogenic arthritis | T84.5Infection and inflammatory reaction due to internal joint prosthesis | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header Report instead: T84.50XA, T84.50XD, T84.50XS, T84.51XA, T84.51XD |
| 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 | Pyogenic arthritis is a non-billable ICD-10-CM category code (M00). | Infection and inflammatory reaction due to internal joint prosthesis is a non-billable ICD-10-CM category code (T84.5). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T84 |
| Use additional code | — | code to identify infection 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