Specific code 2011 ICD-9-CM Diagnosis Code 850.3
Concussion with prolonged loss of consciousness and return to pre-existing conscious level
  • Short description: Concussion-prolong coma.
  • ICD-9-CM 850.3 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 850.3 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2011 version of ICD-9-CM 850.3.
  • More recent version(s) of ICD-9-CM 850.3: 2012 2013 2014.
Applies To
  • Loss of consciousness for more than 24 hours with complete recovery
Convert to ICD-10-CM: 850.3 converts approximately to:
  • 2014 ICD-10-CM S06.0X5A Concussion with loss of consciousness greater than 24 hours with return to pre-existing conscious level, initial encounter
ICD-9-CM Volume 2 Index entries containing back-references to 850.3:
  • Concussion (current) 850.9
    • with
      • loss of consciousness 850.5
        • brief (less than one hour)
        • moderate (1-24 hours) 850.2
        • prolonged (more than 24 hours) (with complete recovery) (with return to pre-existing conscious level) 850.3
          • without return to pre-existing conscious level 850.4
      • mental confusion or disorientation (without loss of consciousness) 850.0
        • with loss of consciousness - see Concussion, with, loss of consciousness
    • brain or cerebral (without skull fracture) 850.9
      • with
        • loss of consciousness 850.5
          • brief (less than one hour)
          • moderate (1-24 hours) 850.2
          • prolonged (more than 24 hours) (with complete recovery) (with return to pre-existing conscious level) 850.3
            • without return to pre-existing conscious level 850.4
        • mental confusion or disorientation (without loss of consciousness) 850.0
          • with loss of consciousness - see Concussion, brain, with, loss of consciousness
        • skull fracture - see Fracture, skull, by site
      • without loss of consciousness 850.0
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 850.3 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 2011 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.