ICD-10-CM > C00-D49 > D37-D48 > D42 D42 Neoplasm of uncertain behavior of meninges Non-Billable/Non-Specific Codes D42.0Neoplasm of uncertain behavior of cerebral meningesD42.1Neoplasm of uncertain behavior of spinal meningesD42.9Neoplasm of uncertain behavior of meninges, unspecified