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ICD-10/G92.00

G92.00 ICD-10-CM Code: Immune effector cell-associated neurotoxicity syndrome, grade unspecified

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

  • MS-DRG 023 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR (MDC 01)
  • MS-DRG 024 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC (MDC 01)
  • MS-DRG 091 — OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC (MDC 01)
  • MS-DRG 092 — OTHER DISORDERS OF NERVOUS SYSTEM WITH CC (MDC 01)
  • MS-DRG 093 — OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/MCC (MDC 01)
  • MS-DRG 791 — PREMATURITY WITH MAJOR PROBLEMS (MDC 15)
  • MS-DRG 793 — FULL TERM NEONATE WITH MAJOR PROBLEMS (MDC 15)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Immune effector cell-associated neurotoxicity syndrome, grade unspecified is a billable ICD-10-CM diagnosis code (G92.00).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for G92.00 in the official ICD-10-CM tabular list.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • ICANS, grade unspecified

Code First

Underlying conditions that must be sequenced before this code.

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

Code Also

Additional codes that may be required to fully describe the encounter.

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

Nearest Codes in This Family

Official ICD-10-CM classifications closest to G92.00 in its code family, with their registry titles.

  • G92 — Toxic encephalopathy
  • G92.0 — Immune effector cell-associated neurotoxicity syndrome
  • 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
  • G92.8 — Other toxic encephalopathy
  • G92.9 — Unspecified toxic encephalopathy

View all codes in the G92 family

Indexed Clinical Terms (2)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Syndrome, immune effector cell-associated neurotoxicity (ICANS)
  • Syndrome, immune effector cell-associated neurotoxicity (ICANS), grade, unspecified