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Table 1 International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes for mild traumatic brain injury

From: Protocol for a systematic review of prognosis after mild traumatic brain injury: an update of the WHO Collaborating Centre Task Force findings

ICD-9-CM first four digits ICD-9-CM fifth digita
800.0, 800.5, 801.0, 801.5, 803.0, 803.5, 804.0, 804.5, 850.0, 850.1, 850.5 or 850.9 0, 1, 2, 6, 9, or missing
854.0 1, 2, 6, 9, or missing
959.0b 1
  1. aSometimes a fifth digit is provided in the code (for example, ICD-9-CM 800.00).
  2. bThe current inclusion of code 959.01 is provisional.