Hi MadridDental!

No problem, here is a good option:
D10.39 - Benign neoplasm of other parts of mouth

Here are additional benign neoplasm coding options for the oral cavity:

D10.0 - Benign neoplasm of lip
D10.1 - Benign neoplasm of tongue
D10.2 - Benign neoplasm of floor of mouth
D10.30 - Benign neoplasm of unspecified part of mouth
D10.4 - Benign neoplasm of tonsil
D10.5 - Benign neoplasm of other parts of oropharynx
D10.6 - Benign neoplasm of nasopharynx
D10.7 - Benign neoplasm of hypopharynx
D10.9 - Benign neoplasm of pharynx, unspecified
D11.0 - Benign neoplasm of parotid gland
D11.7 - Benign neoplasm of other major salivary glands
D11.9 - Benign neoplasm of major salivary gland, unspecified

Hope this helps!