I70.628
BillableAtherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, other extremity
HCC Category Mapping
What This Code Means
Hardening and narrowing of an artificial blood vessel graft in an arm or other extremity (not the legs) causing pain even at rest, indicating severe circulation problems.
Coding Tips
- •Use this code for upper extremity or other non-leg locations presenting with rest pain symptoms.
- •Rest pain in non-leg extremities may indicate critical limb ischemia; review for any associated tissue damage or complications.
Clinical Significance
This code captures atherosclerosis affecting nonbiological (synthetic) bypass graft(s) of the extremities with rest pain in the other extremity (e.g., upper extremity), representing Fontaine Stage III/Rutherford Category 4 critical limb ischemia. Rest pain in bypass graft atherosclerosis indicates severe ischemia at rest, signifying graft failure or progressive disease beyond the graft, with high risk of tissue loss. This condition requires urgent vascular evaluation, potential graft revision or new revascularization, and aggressive risk factor modification.
Documentation Requirements
- ✓Confirmed diagnosis of atherosclerosis affecting nonbiological (synthetic) bypass graft(s)
- ✓Type of bypass graft material documented (synthetic/nonbiological vs. other type such as composite or mixed-material graft)
- ✓Laterality clearly documented (other extremity (e.g., upper extremity))
- ✓History of bypass graft surgery with approximate date or timeframe
- ✓Current status and monitoring plan for the bypass graft
- ✓Documentation of pain occurring at rest, typically worse with leg elevation and relieved by dependency
- ✓Vascular studies confirming critical limb ischemia (reduced ankle-brachial index, toe pressures, or transcutaneous oxygen measurements)
- ✓Differentiation from neuropathic pain, musculoskeletal pain, or other etiologies
- ✓Treatment plan including consideration for revascularization