G93.1 Anoxic brain damage, not elsewhere classified

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Excludes1 (never code together)

• cerebral anoxia due to anesthesia during labor and delivery (O74.3)
• cerebral anoxia due to anesthesia during the puerperium (O89.2)
• neonatal anoxia (P84)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 202 — Coma, Brain Compression/Anoxic Damage
• CMS-HCC V22: HCC 80 — Coma, Brain Compression/Anoxic Damage
• ESRD V24: HCC 80

MS-DRG index

Defines the logic of DRG(s) 091-093 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 348.1 Anoxic brain damage

Diagnosis Index entries for G93.1

• Anoxia (pathological) › cerebral
• Damage › brain (nontraumatic) › anoxic, hypoxic

Nearby codes

• G93 Other disorders of brain
• G93.0 Cerebral cysts
• G93.1 Anoxic brain damage, not elsewhere classified (this code)
• G93.2 Benign intracranial hypertension
• G93.3 Postviral and related fatigue syndromes
• G93.31 Postviral fatigue syndrome
• G93.32 Myalgic encephalomyelitis/chronic fatigue syndrome
• G93.39 Other post infection and related fatigue syndromes