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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Neurotic Disorders, Personality Disorders, And Other Nonpsychotic Mental Disorders 300-316 > Specific Nonpsychotic Mental Disorders Due To Organic Brain Damage 310.* > 2007 ICD-9-CM Diagnosis 310.2 Postconcussion syndrome  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 310.2 can be accessed here. The organic and psychogenic disturbances observed after closed head injuries (HEAD INJURIES, CLOSED). Post-concussion syndrome includes subjective physical complaints (i.e. headache, dizziness), cognitive, emotional, and behavioral changes. These disturbances can be chronic, permanent, or late emerging. 310.2 is a specific code that can be used to specify a diagnosis 310.2 contains 19 index entries View the ICD-9-CM Volume 1 310.* hierarchy 310.2 also known as: Postcontusion syndrome or encephalopathy Posttraumatic brain syndrome, nonpsychotic Status postcommotio cerebri 310.2 excludes: any organic psychotic conditions following head injury (293.0-294.0) frontal lobe syndrome (310.0) postencephalitic syndrome (310.8) Index entries containing 310.2: Concussion (current) 850.9 syndrome 310.2 Disorder - see also Disease mental (nonpsychotic) 300.9 specific, following organic brain damage 310.9 postconcussional syndrome 310.2 Encephalopathy (acute) 348.30 due to trauma (postconcussional) 310.2 current (see also Concussion, brain) 850.9 with skull fracture - see Fracture, skull, by site, with intracranial injury postcontusional 310.2 posttraumatic 310.2 traumatic (postconcussional) 310.2 current (see also Concussion, brain) 850.9 with skull fracture - see Fracture, skull, by site, with intracranial injury Encephalosis, posttraumatic 310.2 Porencephaly (congenital) (developmental) (true) 742.4 traumatic (post) 310.2 Postconcussional syndrome 310.2 Postcontusional syndrome 310.2 Posttraumatic brain syndrome, nonpsychotic 310.2 Psychopathic - see also condition constitution, posttraumatic 310.2 with psychosis 293.9 Punch drunk 310.2 Status (post) postcommotio cerebri 310.2 Syndrome - see also Disease brain (acute) (chronic) (nonpsychotic) (organic) (with behavioral reaction) (with neurotic reaction) 310.9 postcontusional 310.2 posttraumatic nonpsychotic 310.2 concussion 310.2 postconcussional 310.2 postcontusional 310.2