2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Other Disorders Of The Central Nervous System 340-349 > Migraine 346.* >  2008 ICD-9-CM Diagnosis 346.9
Migraine unspecified- A subtype of vascular headaches characterized by periodic unilateral pulsatile headaches which begin in childhood, adolescence, or early adult life and recur with diminishing frequency during advancing years. The two major subtypes are CLASSIC MIGRAINE (i.e., migraine with aura) and COMMON MIGRAINE (i.e., migraine without aura). Migrainous episodes may be associated with alterations in cerebral blood flow. (From Adams et al., Principles of Neurology, 6th ed, p172)
- 346.9 is a non-specific code that cannot be used to specify a diagnosis
- 346.9 contains 6 index entries
- View the ICD-9-CM Volume 1 346.* hierarchy
Index entries containing 346.9:- Headache 784.0
- migraine
 346.9
- vascular 784.0
- migraine type 346.9
- vasomotor 346.9
Hemicrania 346.9- congenital malformation 740.0
Megrim 346.9
Migraine (idiopathic) 346.9
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