The Approach External is identified by letter "X" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 07WTX
Revision of Drain Dev in Bone Marrow, Perc Endo Approach
Revision of Drainage Device in Bone Marrow, Extern Approach
Revision of Drainage Device in Bone Marrow, Open Approach
Revision of Drainage Device in Bone Marrow, Perc Approach