Why is my left fingers tingling?

Perhaps nerve: Maybe a pinched nerve at wrist or elbow, but could be referred problems from cardiac decreased blood flow. Need to sort out with detailed exam and ekg.

Numbnesss tingling: Numbnesss and tingling can be caused by issues directly related to the hand , wrist and upper extremity but there can also be indirect or systemic issues that can cause this. While carpal tunnel syndrome is common and a hand surgeon or orthopedic surgeon takes care of this, the other issues, circulation, referred pain, neck causes, nerve issues not related to compression, other nerve compression