2009 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 > Epilepsy 345.* > 2009 ICD-9-CM Diagnosis 345.6 Infantile spasms An epileptic syndrome characterized by the triad of infantile spasms, hypsarrhythmia, and arrest of psychomotor development at seizure onset. The majority present between 3-12 months of age, with spasms consisting of combinations of brief flexor or extensor movements of the head, trunk, and limbs. The condition is divided into two forms: cryptogenic (idiopathic) and symptomatic (secondary to a known disease process such as intrauterine infections; nervous system abnormalities; BRAIN DISEASES, METABOLIC, INBORN; prematurity; perinatal asphyxia; TUBEROUS SCLEROSIS; etc.). (From Menkes, Textbook of Child Neurology, 5th ed, pp744-8) Myoclonus epilepsy of infancy and early childhood, characterized by seizures involving the muscles of the neck, trunk, and limbs, and manifested by nodding of the head and flexion of the arms. The seizures are associated with brain abnormalities and frequent mental retardation. 345.6 is a non-specific code that cannot be used to specify a diagnosis 345.6 contains 9 index entries View the ICD-9-CM Volume 1 345.* hierarchy 345.6 also known as: Hypsarrhythmia Lightning spasms Salaam attacks 345.6 excludes: salaam tic (781.0) Index entries containing 345.6: Attack salaam (see also Epilepsy) 345.6 Contraction, contracture, contracted infantile (see also Epilepsy) 345.6 Convulsions (idiopathic) 780.39 salaam (see also Epilepsy) 345.6 Hypsarrhythmia (see also Epilepsy) 345.6 Seizure(s) 780.39 salaam (see also Epilepsy) 345.6 Spasm, spastic, spasticity (see also condition) 781.0 infantile (see also Epilepsy) 345.6 lightning (see also Epilepsy) 345.6 nodding 307.3 infantile (see also Epilepsy) 345.6 salaam (infantile) (see also Epilepsy) 345.6