M13.12 Monoarthritis, not elsewhere classified, elbowNon-billable header with 3 child codes.
M13.121 Monoarthritis, not elsewhere classified, right elbowM13.122 Monoarthritis, not elsewhere classified, left elbowM13.129 Monoarthritis, not elsewhere classified, unspecified elbowM13.10 Monoarthritis, not elsewhere classified, unspecified siteM13.11 Monoarthritis, not elsewhere classified, shoulderM13.111 Monoarthritis, not elsewhere classified, right shoulderM13.112 Monoarthritis, not elsewhere classified, left shoulderM13.119 Monoarthritis, not elsewhere classified, unspecified shoulderM13.12 Monoarthritis, not elsewhere classified, elbow (this code)M13.121 Monoarthritis, not elsewhere classified, right elbowM13.122 Monoarthritis, not elsewhere classified, left elbowM13.129 Monoarthritis, not elsewhere classified, unspecified elbowM13.13 Monoarthritis, not elsewhere classified, wristM13.131 Monoarthritis, not elsewhere classified, right wrist