ICD-10-CM Code S09.90XA

Unspecified injury of head, initial encounter

Version 2020 Billable Code

Valid for Submission

S09.90XA is a billable code used to specify a medical diagnosis of unspecified injury of head, initial encounter. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code S09.90XA might also be used to specify conditions or terms like closed injury of head, closed wound of head, conversion muteness, friction alopecia, head and neck injury, headache due to injury of head and neck, etc

Short Description:Unspecified injury of head, initial encounter
Long Description:Unspecified injury of head, initial encounter


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Closed injury of head
  • Closed wound of head
  • Conversion muteness
  • Friction alopecia
  • Head and neck injury
  • Headache due to injury of head and neck
  • Injury of back of head
  • Injury of external auditory canal
  • Injury of forehead
  • Injury of head
  • Injury of head with otorrhagia
  • Injury of head with rhinorrhagia
  • Injury of upper respiratory tract
  • Language disorder associated with thought disorder
  • Major head injury
  • Metal foreign body in forehead
  • Metal foreign body in head
  • Minor head injury
  • Moderate head injury
  • Multiple injuries of head
  • Multiple injuries of head and chest
  • Multiple injuries of thorax
  • Non-accidental injury
  • Non-accidental injury to child
  • Non-accidental traumatic head injury to child
  • Parkinsonism due to and following injury of head
  • Posttraumatic headache
  • Post-traumatic mutism
  • Scalp injury
  • Traumatic alopecia
  • Vertigo preceded by head injury
  • Wig friction

Convert S09.90XA to ICD-9

  • 873.8 - Open wound of head NEC (Approximate Flag)
  • 873.9 - Open wnd head NEC-compl (Approximate Flag)
  • 959.01 - Head injury NOS (Approximate Flag)

Code Classification

  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Injuries to the head (S00-S09)
      • Other and unspecified injuries of head (S09)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Head Injuries

Chances are you've bumped your head before. Often, 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 the brain. 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
  • Dilated (enlarged) pupil in one or both eyes
  • Slurred speech
  • Weakness or numbness in the arms or legs
  • Loss of coordination
  • Increased confusion, restlessness, or agitation

Doctors use a neurologic exam and imaging tests to make a diagnosis. Treatment depends on the type of injury and how severe it is.

NIH: National Institute of Neurological Disorders and Stroke

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