ICD-10-CM › G00-G99 › G89-G99 › G90.8 Other disorders of autonomic nervous system › G90.81
G90.81
Serotonin syndrome
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2025 to now.
- FY2025 Added to the code set Serotonin syndrome
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from G90 Disorders of autonomic nervous system
Excludes1 - never coded here
- dysfunction of the autonomic nervous system due to alcohol (G31.2)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Syndrome > serotonin
Codes in the same group
| Code | Description | Status |
|---|---|---|
| G90.89 | Other disorders of autonomic nervous system | Valid |