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 > ICD-9-CM Diagnosis 346 Migraine 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 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 346.0 Classical migraine A condition characterized by throbbing headaches which are preceded or accompanied by reversible symptoms that reflect cortical or brain stem dysfunction. The most common type of aura consists of a positive visual phenomenon, usually in the form of a scintillating scotoma. An aura may also take the form of other focal neurologic symptoms or signs, including loss of sensation or weakness in an extremity. In general, the aura precedes the headache by less than 60 minutes, develops over 4 minutes or longer, and has a duration of less than one hour. (From Adams et al., Principles of Neurology, 6th ed, p172; Cephalalgia 1988;8:Suppl 7:1-96) 346.0 is a non-specific code that cannot be used to specify a diagnosis 346.0 contains 3 index entries ICD-9-CM Diagnosis 346.00 Classical migraine without intractable migraine 346.00 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 346.01 Classical migraine with intractable migraine so stated 346.01 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 346.1 Common migraine Recurrent vascular headaches not preceded or accompanied by an aura. In general, episodes have the following characteristics: duration of 4-72 hours, moderate to severe intensity, throbbing quality, unilateral cranial distribution, and aggravation by physical activity. Nausea, emesis, photophobia, or phonophobia accompanies the pain. (From Headache Classification Committee of the International Headache Society. Classification and diagnostic criteria for headache disorders, cranial neuralgias and facial pain. Cephalalgia 1988;8:Suppl 7:1-96) 346.1 is a non-specific code that cannot be used to specify a diagnosis 346.1 contains 3 index entries ICD-9-CM Diagnosis 346.10 Common migraine without intractable migraine 346.10 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 346.11 Common migraine with intractable migraine so stated 346.11 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 346.2 Variants of migraine A syndrome characterized by daily episodes of intense periorbital pain that recur over a period of 6-12 weeks that may be followed by a period of remission of months to years. The pain is non-throbbing, has a duration of 30-60 minutes and tends to occur at night or at regular intervals during the day. Unilateral rhinorrhea, conjunctival injection, lacrimation, facial flushing, and miosis frequently accompany the headaches, which primarily affect young adult males. (Adams et al., Principles of Neurology, 6th ed, p181) 346.2 is a non-specific code that cannot be used to specify a diagnosis 346.2 contains 19 index entries ICD-9-CM Diagnosis 346.20 Variants of migraine without intractable migraine 346.20 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 346.21 Variants of migraine with intractable migraine so stated 346.21 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 346.8 Other forms of migraine 346.8 is a non-specific code that cannot be used to specify a diagnosis 346.8 contains 9 index entries ICD-9-CM Diagnosis 346.80 Other forms of migraine without intractable migraine 346.80 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 346.81 Other forms of migraine with intractable migraine so stated 346.81 is a specific code that can be used to specify a diagnosis 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 ICD-9-CM Diagnosis 346.90 Migraine unspecified without intractable migraine 346.90 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 346.91 Migraine unspecified with intractable migraine so stated 346.91 is a specific code that can be used to specify a diagnosis