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G90.81
Billable

Serotonin syndrome

Chapter 6: Diseases of the nervous system

Inclusion Terms

1 item
  • Serotonin toxicity

Code First

5 items
  • 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

12 items
  • 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-)

Billable Code

G90.81 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Referenced in Diagnoses

Conditions that use this ICD-10 code in their documentation

Additional Information from Parent Codes

The following information may apply to this code from its parent codes in the ICD-10 hierarchy. This information is important for proper coding and classification.

Excludes1

1 item

From G90:

  • dysfunction of the autonomic nervous system due to alcohol (G31.2)

Excludes2

8 items

From G00-G99:

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
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