G90.81 - Serotonin syndrome
- Applicable to Serotonin syndrome
- The 2025 edition of ICD10-CM G90.81 became effective on October 1, 2024.
- This is the American ICD10-CM version of G90.81 - other international versions of ICD10 G90.81 may differ.
- G90.81 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Code 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)
Inclusion Term
- Serotonin toxicity
codefirst
- 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)
The following codes above G90.81 contain annotation back-references that may be applicable to G90.81:
Chapter: G00-G99 Diseases of the nervous system
Section: G89-G99 Other disorders of the nervous system
Category: G90 Disorders of autonomic nervous system
Billable/Specific Code
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Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
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