I70.798

HCC Category Mapping

What This Code Means

This code describes a buildup of plaque in a surgically placed bypass graft (a tube used to reroute blood flow around a blocked artery) in an arm or leg, where the blockage is not in the usual locations. This condition can reduce blood flow and cause pain or other complications in the affected limb.

Coding Tips

• •Verify the specific location of the bypass graft and confirm it is not in a native artery or one of the more common graft types (aortoiliac, aortofemoral, etc.) before assigning this 'other' code
• •Ensure documentation specifies which extremity is affected and review the complete medical record to determine if laterality (left/right) should be documented separately if required by your facility's coding standards

Clinical Significance

Other atherosclerosis of other type bypass graft of the extremities (other extremity) captures peripheral arterial disease manifestations in bypass grafts that do not fit the specific categories of claudication, rest pain, ulceration, or gangrene. This may include findings such as bypass graft stenosis, diminished pulses through the graft, or other documented atherosclerotic changes not yet causing limb-threatening ischemia. While less severe than rest pain or tissue loss, this still represents significant vascular disease requiring ongoing surveillance and management.

Documentation Requirements

• ✓Documented atherosclerotic disease of other type bypass graft(s) with manifestation other than claudication, rest pain, ulceration, or gangrene
• ✓Laterality documented: other extremity
• ✓Type of bypass graft specified (synthetic, composite, or other non-vein/non-biological type)
• ✓Specific findings described (graft stenosis, abnormal vascular studies, diminished graft flow)
• ✓Current management plan (surveillance imaging, antiplatelet therapy, consideration for revision)

Commonly Confused Codes