N99 vs T88
N99 (Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified) compared with T88 (Other complications of surgical and medical care, not elsewhere classified), 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. T88 carries an Excludes2 note covering N99: “intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| N99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified | T88Other complications of surgical and medical care, not elsewhere classified | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header Report instead: T88.0XXA, T88.0XXD, T88.0XXS, T88.1XXA, T88.1XXD |
| Classification | N00-N99 — Diseases of the Genitourinary System (N00-N99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified is a non-billable ICD-10-CM category code (N99). | Other complications of surgical and medical care, not elsewhere classified is a non-billable ICD-10-CM category code (T88). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T88 |
| 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) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources