G93.7 vs K77
G93.7 (Reye's syndrome) compared with K77 (Liver disorders in diseases classified elsewhere), 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. K77 carries an Excludes2 note covering G93.7: “Reye's syndrome (G93.7)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| G93.7Reye's syndrome | K77Liver disorders in diseases classified elsewhere | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | K00-K95 — Diseases of the Digestive System (K00-K95) |
| Definition | Reye's syndrome is a billable ICD-10-CM diagnosis code (G93.7). | Liver disorders in diseases classified elsewhere is a billable ICD-10-CM diagnosis code (K77). |
| Use additional code | code for adverse effect due to salicylates, if applicable (T39.0-, with sixth character 5) | — |
| Code first | poisoning due to salicylates, if applicable (T39.0-, with sixth character 1-4) | underlying disease, such as: amyloidosis (E85.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources