G90.81Serotonin syndrome
ICD-10-CM billable/specific code — part of Other disorders of the nervous system (G89-G99)
Coding Notes
Code First
- poisoning due to drug or toxin, such as:
- linezolid (T36.8X- with sixth character 1-4)
- monoamine oxidase inhibitors (T43.1X with sixth character 1-4)
- selective serotonin and norepinephrine reuptake inhibitors [SSNRI] (T43.21 with sixth character 1-4)
- selective serotonin reuptake inhibitors [SSRI] (T43.22 with sixth character 1-4)
Use Additional Code
- code for adverse effect, if applicable, to identify drug, such as:
- linezolid (T36.8X5)
- monoamine oxidase inhibitors (T43.1X5)
- selective serotonin and norepinephrine reuptake inhibitors [SSNRI] (T43.215)
- selective serotonin reuptake inhibitors [SSRI] (T43.225)
- code, if applicable, to identify:
- disseminated intravascular coagulation (D65)
- hypertensive crisis (I16.-)
- metabolic acidosis (E87.2-)
- shock, not elsewhere classified (R57.-)
- toxic encephalopathy (G92.-)
- ventricular tachycardia (I47.2-)