Appendix 2 (as supplied by the authors): ICD codes to identify high-risk children ICD-9 codes to identify high risk children in physician claims database Category of condition Condition ICD-9 code Bacterial meningitis 320.* Meningitis due to other organisms 321.* Meningitis of unspecified cause 322.* Encephalitis myelitis and 323.* Inflammatory Diseases of The Central encephalomyelitis Nervous System abscess 324.* Phlebitis and thrombophlebitis of 325.* intracranial venous sinuses Late effects of intracranial abscess or 326.* pyogenic infection Cerebral degenerations usually 330.* manifest in childhood Other cerebral degenerations 331.* Hereditary and Degenerative Other extrapyramidal disease and 333.* Diseases of the Central Nervous abnormal movement disorders System Spinocerebellar disease 334.* Anterior horn cell disease 335.* Disorders of the autonomic nervous 337.* Other demyelinating diseases of 341.* central nervous Other Disorders Of The Central Epilepsy and recurrent seizures 345.* Nervous System Other conditions of brain (includes 348.* various encephalopathies) Other and unspecified disorders of the 349.* nervous Symptoms, Signs, And Ill-Defined Conditions Convulsions 780.3* Tuberculosis of meninges and central 013.* nervous Slow virus infection and prion diseases of central nervous 046.* Infectious And Parasitic Diseases Meningitis due to enterovirus 047.* Other enterovirus diseases of central 048.* nervous Other non-arthropod-borne viral 049.* diseases of central nervous Mosquito-borne viral encephalitis 062.* Tick-borne viral encephalitis 063.*
Viral encephalitis transmitted by other and unspecified arthropods 064.* Malignant neoplasm of brain 191.* Neoplasms Malignant neoplasm of other and 192.* unspecified parts of nervous Benign neoplasm of brain and other 225.* parts of nervous Fracture of vault of skull 800.* Injuries: Fracture Of Skull Fracture of base of skull 801.* Other and unqualified skull fractures 803.* Multiple fractures involving skull or 804.* face with other bones Concussion 850.* Cerebral laceration and contusion 851.* Subarachnoid subdural and extradural 852.* Injuries: Intracranial Injury, Excluding Those With Skull Fracture hemorrhage following injury Other and unspecified intracranial 853.* hemorrhage following injury Intracranial injury of other and unspecified nature 854.* Source: http://www.icd9data.com/2013/volume1/default.htm
ICD-10-CA codes to identify high risk children in emergency department visits and hospital discharge databases Category of condition Condition ICD-10-CA code Bacterial meningitis, not G00.* Meningitis in bacterial G01.* Meningitis in other infectious and parasitic diseases G02.* Meningitis due to other and unspecified causes G03.* Encephalitis, myelitis and encephalomyelitis G04.* Diseases of the nervous : Inflammatory diseases of the central nervous Encephalitis, myelitis and encephalomyelitis in diseases G05.* abscess and granuloma G06.* abscess and granuloma in G07.* phlebitis and G08.* thrombophlebitis Sequelae of inflammatory diseases of central nervous G09.* Huntington's disease G11.* Diseases of the nervous : Systemic Spinal muscular atrophy and atrophies primarily affecting the central nervous related syndromes G13.* Huntington's disease G11.* Spinal muscular atrophy and related syndromes G13.* Other degenerative diseases of basal ganglia G23.* Diseases of the nervous : Extrapyramidal and movement disorders Dystonia Other extrapyramidal and movement disorders Extrapyramidal and movement disorders in G24.* G25.* G26.*
Diseases of the nervous : Other degenerative diseases of the nervous Diseases of the nervous : Episodic and paroxysmal disorders Diseases of the nervous : Other disorders of the nervous Metabolic disorders Infectious And Parasitic Diseases Other degenerative diseases of nervous, not Other degenerative disorders of nervous in diseases Epilepsy and recurrent seizures Disorders of autonomic nervous Hydrocephalus Toxic encephalopathy Other disorders of brain Other disorders of brain in Other disorders of central nervous Intraoperative and postprocedural complications and disorders of nervous, not elsewhere Other disorders of nervous not elsewhere Other disorders of nervous in diseases elsewhere Disorders of sphingolipid metabolism and other lipid storage disorders Tuberculosis of nervous Atypical virus infections of central nervous Mosquito-borne viral encephalitis Tick-borne viral encephalitis Other viral encephalitis, not Unspecified viral encephalitis Viral meningitis G31.* G32.* G40.* G90.* G91.* G92.* G93.* G94.* G96.* G97.* G98.* G99.* E75.* A17.* A81.* A83.* A84.* A85.* A86.* A87.*
Neoplasms Symptoms, signs and abnormal clinical and laboratory findings, not Other viral infections of central nervous, not Unspecified viral infection of central nervous Other mosquito-borne viral fevers Other arthropod-borne viral fevers, not elsewhere Unspecified arthropod-borne viral fever Malignant neoplasm of meninges Malignant neoplasm of brain Malignant neoplasm of spinal cord, cranial nerves and other parts of central nervous Benign neoplasm of meninges Benign neoplasm of brain and other parts of central nervous Febrile convulsions Fracture of skull and facial bones Intracranial injury Injuries to the head Crushing injury of head Avulsion and traumatic amputation of part of head Other and unspecified injuries of head Source: http://www.icd10data.com/icd10cm/codes A88.* A89.* A92.* A93.* A94.* C70.* C71.* C72.* D32.* D33.* R56.0* S02.* S06.* S07.* S08.* S09.*