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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