M
The Thumb, Left body part is identified by the character M in the 4th position of the ICD-10-PCS procedure code.
It is contained within the Reattachment root operation of the Anatomical Regions, Upper Extremities body system
under the Medical and Surgical section. The 4the position refers to the body part or body region when applicable.
Section:
0 = Medical and Surgical
Body System:
X = Anatomical Regions, Upper Extremities
Root Operation:
M = Reattachment
Body Part:
5 - Axilla, Left4 - Axilla, RightC - Elbow Region, LeftB - Elbow Region, Right1 - Forequarter, Left0 - Forequarter, RightK - Hand, LeftJ - Hand, RightP - Index Finger, LeftN - Index Finger, RightW - Little Finger, LeftV - Little Finger, RightF - Lower Arm, LeftD - Lower Arm, RightR - Middle Finger, LeftQ - Middle Finger, RightT - Ring Finger, LeftS - Ring Finger, Right3 - Shoulder Region, Left2 - Shoulder Region, RightM - Thumb, LeftL - Thumb, Right9 - Upper Arm, Left8 - Upper Arm, Right7 - Upper Extremity, Left6 - Upper Extremity, RightH - Wrist Region, LeftG - Wrist Region, RightSelect the appropriate procedure code based on the approach & device:
0XMM - Thumb, Left
Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure
0XMM0ZZ - Reattachment of Left Thumb, Open Approach