Answer: A
S01.21 is the correct code as it codes for laceration of the nose without any foreign body. As Denver did not have any other foreign body inside his nose, therefore this code is appropriate.
Option B is not correct because S01.22 is used to code for laceration with foreign body of the nose.
Option C is not correct because S01.25 is used to code for open bite of the nose.
Option D is not correct because S01.20 is used to code for unspecified open wound of the nose.