The Body Part Thymus is identified by letter "M" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 07CM
Extirpation of Matter from Thymus, Perc Endo Approach
Extirpation of Matter from Thymus, Open Approach
Extirpation of Matter from Thymus, Percutaneous Approach