The Body Part Bone Marrow is identified by letter "T" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 07JT
Inspection of Bone Marrow, Percutaneous Endoscopic Approach
Inspection of Bone Marrow, Percutaneous Approach
Inspection of Bone Marrow, Open Approach