G90.81 SEROTONIN SYNDROME

Code Information

  • Diagnosis Code: G90.81
  • Short Description: Serotonin syndrome
  • Long Description: Serotonin syndrome
  • Code Version: 2025 ICD-10-CM

The code G90.81 is VALID for claim submission

Code Classification

Synonyms

  • Serotonin syndrome

References to Index of Diseases and Injuries

The code G90.81 has the following ICD-10-CM references to the Index of Diseases and Injuries

  • Inclusion Terms:
    • Serotonin toxicity
  • 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)

Similar Codes

ICD-10 Code ICD-10 Description
G90 Disorders of autonomic nervous system
G90.0 Idiopathic peripheral autonomic neuropathy
G90.01 Carotid sinus syncope
G90.09 Other idiopathic peripheral autonomic neuropathy
G90.1 Familial dysautonomia [Riley-Day]
G90.2 Horner's syndrome
G90.3 Multi-system degeneration of the autonomic nervous system
G90.4 Autonomic dysreflexia
G90.5 Complex regional pain syndrome I (CRPS I)
G90.50 Complex regional pain syndrome I, unspecified
G90.51 Complex regional pain syndrome I of upper limb
G90.511 Complex regional pain syndrome I of right upper limb
G90.512 Complex regional pain syndrome I of left upper limb
G90.513 Complex regional pain syndrome I of upper limb, bilateral
G90.519 Complex regional pain syndrome I of unspecified upper limb
G90.52 Complex regional pain syndrome I of lower limb
G90.521 Complex regional pain syndrome I of right lower limb
G90.522 Complex regional pain syndrome I of left lower limb
G90.523 Complex regional pain syndrome I of lower limb, bilateral
G90.529 Complex regional pain syndrome I of unspecified lower limb
G90.59 Complex regional pain syndrome I of other specified site
G90.8 Other disorders of autonomic nervous system
G90.89 Other disorders of autonomic nervous system
G90.9 Disorder of the autonomic nervous system, unspecified
G90.A Postural orthostatic tachycardia syndrome [POTS]
G90.B LMNB1-related autosomal dominant leukodystrophy
This page was last updated on: 10/1/2025
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