ICD-9 Code 800.46

Closed fracture of vault of skull with intracranial injury of other and unspecified nature, with loss of consciousness of unspecified duration

Not Valid for Submission

800.46 is a legacy non-billable code used to specify a medical diagnosis of closed fracture of vault of skull with intracranial injury of other and unspecified nature, with loss of consciousness of unspecified duration. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 800.46
Short Description:Cl skull vlt fx-coma NOS
Long Description:Closed fracture of vault of skull with intracranial injury of other and unspecified nature, with loss of consciousness of unspecified duration

Convert 800.46 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

  • S02.0XXA - Fracture of vault of skull, init encntr for closed fracture
  • S06.899A - Intcran inj w loss of consciousness of unsp duration, init
  • S06.9X9A - Unsp intracranial injury w LOC of unsp duration, init

Code Classification

  • Injury and poisoning (800–999)
    • Fracture of skull (800-804)
      • 800 Fracture of vault of skull

Information for Medical Professionals

Information for Patients


Head Injuries

Also called: Cranial injuries, Skull fractures, Skull injuries

Chances are you've bumped your head before. Usually, the injury is minor because your skull is hard and it protects your brain. But other head injuries can be more severe, such as a skull fracture, concussion, or traumatic brain injury.

Head injuries can be open or closed. A closed injury does not break through the skull. With an open, or penetrating, injury, an object pierces the skull and enters brain tissue. Closed injuries are not always less severe than open injuries.

Some common causes of head injuries are falls, motor vehicle accidents, violence, and sports injuries.

It is important to know the warning signs of a moderate or severe head injury. Get help immediately if the injured person has

  • A headache that gets worse or does not go away
  • Repeated vomiting or nausea
  • Convulsions or seizures
  • An inability to wake up
  • Dilation of one or both pupils of the eyes
  • Slurred speech
  • Weakness or numbness in the arms or legs
  • Loss of coordination
  • Increased confusion, restlessness, or agitation

NIH: National Institute of Neurological Disorders and Stroke

  • Head injury - first aid
  • Skull fracture

[Read More]

Traumatic Brain Injury

Also called: Acquired brain injury, TBI

Traumatic brain injury (TBI) happens when a bump, blow, jolt, or other head injury causes damage to the brain. Every year, millions of people in the U.S. suffer brain injuries. More than half are bad enough that people must go to the hospital. The worst injuries can lead to permanent brain damage or death. Half of all TBIs are from motor vehicle accidents. Military personnel in combat zones are also at risk.

Symptoms of a TBI may not appear until days or weeks following the injury. A concussion is the mildest type. It can cause a headache or neck pain, nausea, ringing in the ears, dizziness, and tiredness. People with a moderate or severe TBI may have those, plus other symptoms:

  • A headache that gets worse or does not go away
  • Repeated vomiting or nausea
  • Convulsions or seizures
  • Inability to awaken from sleep
  • Slurred speech
  • Weakness or numbness in the arms and legs
  • Dilated eye pupils

Health care professionals use a neurological exam and imaging tests to assess TBI. Serious traumatic brain injuries need emergency treatment. Treatment and outcome depend on how severe the injury is. TBI can cause a wide range of changes affecting thinking, sensation, language, or emotions. TBI can be associated with post-traumatic stress disorder. People with severe injuries usually need rehabilitation.

NIH: National Institute of Neurological Disorders and Stroke

  • Brain injury - discharge
  • Chronic subdural hematoma
  • EEG
  • Extradural hemorrhage
  • Facts about Concussion and Brain Injury (Centers for Disease Control and Prevention)
  • Head injury - first aid
  • Intracranial pressure monitoring
  • Shaken baby syndrome
  • Subdural hematoma

[Read More]

ICD-9 Footnotes

General Equivalence Map Definitions
The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.