ICD-10-CM > C00-D49 > D10-D36 > D29 > D29.2 D29.2 Benign neoplasm of testis Non-Billable/Non-Specific Use Additional code to identify any functional activity. Codes D29.20Benign neoplasm of unspecified testisD29.21Benign neoplasm of right testisD29.22Benign neoplasm of left testis