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 0WW0X
Revision of Other Device in Head, Open Approach
Revision of Other Device in Head, Percutaneous Approach
Revision of Other Device in Head, External Approach
Revision of Radioactive Element in Head, Open Approach
Revision of Drainage Device in Head, Open Approach
Revision of Drainage Device in Head, Percutaneous Approach
Revision of Autol Sub in Head, Perc Approach
Revision of Infusion Device in Head, Percutaneous Approach
Revision of Infusion Device in Head, Open Approach
Revision of Infusion Device in Head, Perc Endo Approach
Revision of Nonaut Sub in Head, Open Approach
Revision of Radioactive Element in Head, External Approach
Revision of Drainage Device in Head, Perc Endo Approach
Revision of Synthetic Substitute in Head, Perc Approach
Revision of Synthetic Substitute in Head, Perc Endo Approach