G92.0 Immune effector cell-associated neurotoxicity syndrome

Not billable (header)Chapter 6

Report one of the more specific codes below.

Check coverage with this diagnosis

Codes under this one

G92.00 Immune effector cell-associated neurotoxicity syndrome, grade unspecified
G92.01 Immune effector cell-associated neurotoxicity syndrome, grade 1
G92.02 Immune effector cell-associated neurotoxicity syndrome, grade 2
G92.03 Immune effector cell-associated neurotoxicity syndrome, grade 3
G92.04 Immune effector cell-associated neurotoxicity syndrome, grade 4
G92.05 Immune effector cell-associated neurotoxicity syndrome, grade 5

Instructional notes

Chapter 6

Excludes2Not included here: the patient may have both; report both when both are present.

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)

This code

Code firstSequence the underlying condition first.

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

Code also

, if applicable, associated signs and symptoms, such as:
cerebral edema (G93.6)
unspecified convulsions (R56.9)

Chapter 6: Diseases of the nervous system · G89-G99 Other disorders of the nervous system (G89-G99)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.