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ICD-10/G45.8

G45.8 ICD-10-CM Code: Other transient cerebral ischemic attacks and related syndromes

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 061 — ISCHEMIC STROKE, PRECEREBRAL OCCLUSION OR TRANSIENT ISCHEMIA WITH THROMBOLYTIC AGENT WITH MCC (MDC 01)
  • MS-DRG 062 — ISCHEMIC STROKE, PRECEREBRAL OCCLUSION OR TRANSIENT ISCHEMIA WITH THROMBOLYTIC AGENT WITH CC (MDC 01)
  • MS-DRG 063 — ISCHEMIC STROKE, PRECEREBRAL OCCLUSION OR TRANSIENT ISCHEMIA WITH THROMBOLYTIC AGENT WITHOUT CC/MCC (MDC 01)
  • MS-DRG 069 — TRANSIENT ISCHEMIA WITHOUT THROMBOLYTIC (MDC 01)

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

Other transient cerebral ischemic attacks and related syndromes is a billable ICD-10-CM diagnosis code (G45.8).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for G45.8 in the official ICD-10-CM tabular list.

Excludes1 — Not Coded Here

Conditions that can never be reported with this code; the two are mutually exclusive.

  • neonatal cerebral ischemia (P91.0)
  • transient retinal artery occlusion (H34.0-)

Nearest Codes in This Family

Official ICD-10-CM classifications closest to G45.8 in its code family, with their registry titles.

  • G45 — Transient cerebral ischemic attacks and related syndromes
  • G45.0 — Vertebro-basilar artery syndrome
  • G45.1 — Carotid artery syndrome (hemispheric)
  • G45.2 — Multiple and bilateral precerebral artery syndromes
  • G45.3 — Amaurosis fugax
  • G45.4 — Transient global amnesia
  • G45.9 — Transient cerebral ischemic attack, unspecified

View all codes in the G45 family

Indexed Clinical Terms (5)

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

  • Attack, attacks, transient ischemic (TIA), specified NEC
  • Insufficiency, insufficient, cerebrovascular (acute), with transient focal neurological signs and symptoms
  • Ischemia, ischemic, cerebral (chronic) (generalized), recurrent focal
  • Syndrome, steal, subclavian
  • Syndrome, subclavian steal