I70.622
BillableAtherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, left leg
HCC Category Mapping
What This Code Means
Hardening and narrowing of an artificial blood vessel graft in the left leg causing pain even at rest, indicating severe circulation problems.
Coding Tips
- •Confirm left leg laterality is explicitly documented; rest pain indicates significant vascular compromise requiring close monitoring.
- •Rest pain often precedes tissue loss or gangrene; review the record for any ulceration or necrosis that might require additional coding.
Clinical Significance
This code captures atherosclerosis affecting nonbiological (synthetic) bypass graft(s) of the extremities with rest pain in the left lower 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 (left lower 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