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 0SWTX
Revision of Synth Sub in R Knee Jt, Femoral, Open Approach
Revise Synth Sub in R Knee Jt, Femoral, Perc Endo
Revision of Synth Sub in R Knee Jt, Femoral, Perc Approach
Revision of Synth Sub in R Knee Jt, Femoral, Extern Approach