ICD-10-CM > C00-D49 > D49-D49 > D49 > D49.5 > D49.51 D49.51 Neoplasm of unspecified behavior of kidney Non-Billable/Non-Specific Codes D49.511Neoplasm of unspecified behavior of right kidneyD49.512Neoplasm of unspecified behavior of left kidneyD49.519Neoplasm of unspecified behavior of unspecified kidney