ICD-10-CM > C00-D49 > D49-D49 > D49 > D49.6 D49.6 Neoplasm of unspecified behavior of brain Billable/Specific Copy Code Copy Description Type 1 Excludes neoplasm of unspecified behavior of cerebral meninges (D49.7)neoplasm of unspecified behavior of cranial nerves (D49.7)