G43.509
BillablePersistent migraine aura without cerebral infarction, not intractable, without status migrainosus
HCC Category Mapping
RxHCCHCC 166 — Migraine
0.000What This Code Means
A migraine with persistent warning signs (aura) that does not cause stroke, responds to treatment, and is not in a prolonged migraine state.
Coding Tips
- •Persistent aura lasting >1 hour after migraine onset should be documented
- •Ensure imaging studies confirm absence of cerebral infarction
Clinical Significance
Persistent migraine aura without cerebral infarction represents prolonged aura symptoms (visual, sensory, or speech disturbances) lasting beyond the typical 60-minute duration, without evidence of brain infarction on imaging. This condition requires careful monitoring as it may progress to migrainous infarction and indicates higher neurological risk. Proper coding distinguishes this from migrainous stroke, impacting treatment decisions and follow-up intensity.
Documentation Requirements
- ✓Documentation of prolonged aura symptoms persisting beyond 60 minutes
- ✓Specific aura type documented (visual, sensory, speech/language, motor)
- ✓Neuroimaging results (MRI preferred) confirming absence of cerebral infarction
- ✓Treatment responsiveness documented (not intractable = responds to standard therapy)
- ✓Episode duration documented (under 72 hours or absence of status migrainosus)
- ✓Temporal relationship between aura onset and headache phase
- ✓Prior history of migraine with aura and any progression pattern
Commonly Confused Codes
G43.601-G43.619 (Persistent migraine aura WITH cerebral infarction) — use when imaging confirms actual brain infarction during migraine auraG43.101-G43.119 (Migraine with aura) — standard aura resolves within 60 minutes; persistent aura does notG43.401-G43.419 (Hemiplegic migraine) — involves motor weakness specifically, not just prolonged sensory/visual auraG45.9 (Transient cerebral ischemic attack, unspecified) — TIA is vascular in origin, not migraine-relatedH53.1 (Subjective visual disturbances) — isolated visual symptoms without migraine context
Code Hierarchy
└G43Migraine└G43.5Persistent migraine aura without cerebral infarction└G43.50Persistent migraine aura without cerebral infarction, not intractable└G43.509Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus
└G43.509Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus