Specific code 2014 ICD-9-CM Diagnosis Code 310.2
Postconcussion syndrome
  • Billable Code
  • ICD-9-CM 310.2 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 310.2 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Clinical Information
  • 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 Excludes
  • any organic psychotic conditions following head injury (293.0-294.0)
  • frontal lobe syndrome (310.0)
  • postencephalitic syndrome (310.89)
Applies To
  • Postcontusion syndrome or encephalopathy
  • Posttraumatic brain syndrome, nonpsychotic
  • Status postcommotio cerebri
Use Additional
  • Use additional code to identify associated post-traumatic headache, if applicable (339.20-339.22)
Convert to ICD-10-CM: 310.2 converts directly to:
  • 2014 ICD-10-CM F07.81 Postconcussional syndrome
ICD-9-CM Volume 2 Index entries containing back-references to 310.2:
  • Concussion (current) 850.9
    • syndrome 310.2
  • Disorder - see also Disease
    • mental (nonpsychotic) 300.9
      • affecting management of pregnancy, childbirth, or puerperium 648.4
      • drug-induced 292.9
        • hallucinogen persisting perception 292.89
        • specified type NEC 292.89
      • due to or associated with
      • induced by drug 292.9
      • neurotic (see also Neurosis) 300.9
      • of infancy, childhood or adolescence 313.9
      • persistent
        • other
          • due to conditions classified elsewhere 294.8
        • unspecified
          • due to conditions classified elsewhere 294.9
      • presenile 310.1
      • previous, affecting management of pregnancy V23.89
      • psychoneurotic (see also Neurosis) 300.9
      • psychotic (see also Psychosis) 298.9
      • specific, following organic brain damage 310.9
        • cognitive or personality change of other type 310.1
        • frontal lobe syndrome 310.0
        • postconcussional syndrome 310.2
        • specified type NEC 310.89
      • transient
        • in conditions classified elsewhere 293.9
  • Encephalopathy (acute) 348.30
    • due to
      • birth injury (intracranial) 767.8
      • dialysis 294.8
      • drugs - (see also Table of Drugs and Chemicals) 349.82
      • hyperinsulinism - see Hyperinsulinism
      • influenza (virus) (see also Influenza) 487.8
      • lack of vitamin (see also Deficiency, vitamin) 269.2
      • nicotinic acid deficiency 291.2
      • serum (nontherapeutic) (therapeutic) 999.59
      • syphilis 094.81
      • trauma (postconcussional) 310.2
        • current (see also Concussion, brain) 850.9
          • with skull fracture - see Fracture, skull, by site, with intracranial injury
      • vaccination 323.51
    • 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
  • 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
      • with
        • presenile brain disease (see also Dementia, presenile) 290.10
        • psychosis, psychotic reaction (see also Psychosis, organic) 294.9
      • chronic alcoholic 291.2
      • congenital (see also Disability, intellectual) 319
      • postcontusional 310.2
      • posttraumatic
        • nonpsychotic 310.2
        • psychotic 293.9
      • psycho-organic (see also Syndrome, psycho-organic) 310.9
      • psychotic (see also Psychosis, organic) 294.9
      • senile (see also Dementia, senile) 290.0
    • concussion 310.2
    • postconcussional 310.2
    • postcontusional 310.2
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 310.2 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.