ICD-10-CM > S00-T88 > S00-S09 > S09 > S09.9 > S09.90 > S09.90XA S09.90XA Unspecified injury of head, initial encounter Billable/Specific Copy Code Copy Description Applicable To Head injury NOS Type 1 Excludes brain injury NOS (S06.9-)head injury NOS with loss of consciousness (S06.9-)intracranial injury NOS (S06.9-)