Table 1 ICD-9-CM definitions of PAD and related treatments

Diagnoses: PAD

440.0 (atherosclerosis of aorta)

440.2 (atherosclerosis of native arteries of the extremities),

440.3 (atherosclerosis of bypass graft of the extremities),

440.8 (atherosclerosis of other specific arteries)

440.9 (other atherosclerosis of native arteries of the extremities)

443 (other peripheral vascular disease)

444.0 (arterial embolism, thrombosis of abdominal aorta)

444.22 (arterial embolism & thrombosis of lower extremity)

444.8 (arterial embolism, thrombosis of other specific artery)

444.9 (embolism & thrombosis of unspecific artery)

447.8 (other specific disorders of arteries and arterioles)

447.9 (unspecific disorders of arteries and arterioles)

Treatments: PTA series (Percutaneous Transluminal Angioplasty)

38.08 (incision of vessel, lower limb arteries)

38.18 (endarterectomy, lower limb arteries)

38.38 (resection of vessel with anastomosis, lower limb arteries)

38.48 (resection of vessel with replacement, lower limb arteries)

38.68 (other excision of vessel, lower limb arteries)

38.88 (other surgical occlusion of vessel, lower limb arteries)

39.50 (angioplasty or atherectomy of non-coronary vessel)

39.7 (Endovascular repair of vessel)

39.90 (insertion of non-coronary artery stent)

Treatments: Bypass surgery

39.25 (aorta-iliac-femoral bypass)

39.26 (other intra-abdominal vascular shunt or bypass)

39.29 (other(peripheral) vascular shunt or bypass)

Treatments: Amputation

84.1 (amputation of lower limb)

84.10 ~ 84.15 low level amputation (amputation below knee)

84.16 ~ 84.19 high level amputation (knee disarticulation or above)