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ICD-10-CM 2027 diagnosis code

G92.0Immune effector cell-associated neurotoxicity syndrome

Not billable — use a more specific code

G92.0 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.

Code last changed in FY2022 (effective October 1, 2021). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About G92.0

G92.0 is the ICD-10-CM diagnosis code for immune effector cell-associated neurotoxicity syndrome. It belongs to category G92 (toxic encephalopathy), block G89-G99 (other disorders of the nervous system) and chapter 6 (diseases of the nervous system). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

Within G92 (toxic encephalopathy), G92.0 is specifically for immune effector cell-associated neurotoxicity syndrome. Related codes cover other toxic encephalopathy (G92.8) and unspecified toxic encephalopathy (G92.9).

To report this condition, pick the subcode that matches the documentation: G92.00 (grade unspecified), G92.01 (grade 1), G92.02 (grade 2), G92.03 (grade 3), G92.04 (grade 4) and G92.05 (grade 5).

Code first underlying cause such as: complications of immune effector cellular therapy (T80.82).

It was added in FY2022, effective October 1, 2021.

Specific codes under G92.0

Coding notes

Code firstSequence the underlying condition first
  • underlying cause such as:
  • complications of immune effector cellular therapy (T80.82)
Code alsoTwo codes may be needed; sequencing depends on circumstances
  • , if applicable, associated signs and symptoms, such as:
  • cerebral edema (G93.6)
  • unspecified convulsions (R56.9)

Notes that apply from higher levels

Instructions written at a parent level also apply to G92.0.

Broader instructions also apply from Chapter 6: Diseases of the nervous system.

Codes whose notes reference G92.0

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2022 (effective 10/1/2021): Added
  • No changes since FY2022.

Common questions about G92.0

Is G92.0 billable?

No. G92.0 is a header code. Report one of its more specific subcodes instead.