ICD-9 Code 801.50

Open fracture of base of skull without mention of intracranial injury, unspecified state of consciousness

Not Valid for Submission

801.50 is a legacy non-billable code used to specify a medical diagnosis of open fracture of base of skull without mention of intracranial injury, unspecified state of consciousness. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 801.50
Short Description:Open skull base fracture
Long Description:Open fracture of base of skull without mention of intracranial injury, unspecified state of consciousness

Convert 801.50 to ICD-10

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

  • -

Code Classification

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

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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.