S63.62 - Sprain of interphalangeal joint of thumb S63.6 - Other and unspecified sprain of finger(s) S63.62 - Sprain of interphalangeal joint of thumb S63.621 - Sprain of interphalangeal joint of right thumb S63.622 - Sprain of interphalangeal joint of left thumb S63.629 - Sprain of interphalangeal joint of unspecified thumb