ICD↔CPT crosswalk
CPT C9765: ICD-10 codes that support medical necessity
These ICD-10-CM diagnoses support medical necessity for CPT C9765 under Medicare coverage policies (LCDs, NCDs, and Billing & Coding articles). Billing CPT C9765 with a diagnosis that isn't covered typically denies as CARC 50 — not medically necessary.
National approximation. Coverage varies by MAC and state — confirm against the specific LCD/NCD and article that applies to your jurisdiction and date of service.
| ICD-10 | Description |
|---|---|
| I70.201 | Unspecified atherosclerosis of native arteries of extremities, right leg |
| I70.202 | Unspecified atherosclerosis of native arteries of extremities, left leg |
| I70.208 | Unspecified atherosclerosis of native arteries of extremities, other extremity |
| I70.211 | Atherosclerosis of native arteries of extremities with intermittent claudication, right leg |
| I70.212 | Atherosclerosis of native arteries of extremities with intermittent claudication, left leg |
| I70.213 | Atherosclerosis of native arteries of extremities with intermittent claudication, bilateral legs |
| I70.218 | Atherosclerosis of native arteries of extremities with intermittent claudication, other extremity |
| I70.221 | Atherosclerosis of native arteries of extremities with rest pain, right leg |
| I70.222 | Atherosclerosis of native arteries of extremities with rest pain, left leg |
| I70.223 | Atherosclerosis of native arteries of extremities with rest pain, bilateral legs |
| I70.228 | Atherosclerosis of native arteries of extremities with rest pain, other extremity |
| I70.231 | Atherosclerosis of native arteries of right leg with ulceration of thigh |
| I70.232 | Atherosclerosis of native arteries of right leg with ulceration of calf |
| I70.233 | Atherosclerosis of native arteries of right leg with ulceration of ankle |
| I70.234 | Atherosclerosis of native arteries of right leg with ulceration of heel and midfoot |
| I70.235 | Atherosclerosis of native arteries of right leg with ulceration of other part of foot |
| I70.238 | Atherosclerosis of native arteries of right leg with ulceration of other part of lower leg |
| I70.241 | Atherosclerosis of native arteries of left leg with ulceration of thigh |
| I70.242 | Atherosclerosis of native arteries of left leg with ulceration of calf |
| I70.243 | Atherosclerosis of native arteries of left leg with ulceration of ankle |
| I70.244 | Atherosclerosis of native arteries of left leg with ulceration of heel and midfoot |
| I70.245 | Atherosclerosis of native arteries of left leg with ulceration of other part of foot |
| I70.248 | Atherosclerosis of native arteries of left leg with ulceration of other part of lower leg |
| I70.25 | Atherosclerosis of native arteries of other extremities with ulceration |
| I70.261 | Atherosclerosis of native arteries of extremities with gangrene, right leg |
| I70.262 | Atherosclerosis of native arteries of extremities with gangrene, left leg |
| I70.263 | Atherosclerosis of native arteries of extremities with gangrene, bilateral legs |
| I70.268 | Atherosclerosis of native arteries of extremities with gangrene, other extremity |
| I70.291 | Other atherosclerosis of native arteries of extremities, right leg |
| I70.292 | Other atherosclerosis of native arteries of extremities, left leg |
| I70.293 | Other atherosclerosis of native arteries of extremities, bilateral legs |
| I70.298 | Other atherosclerosis of native arteries of extremities, other extremity |
| I70.301 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, right leg |
| I70.302 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, left leg |
| I70.303 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, bilateral legs |
| I70.308 | Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, other extremity |
| I70.311 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, right leg |
| I70.312 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, left leg |
| I70.313 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
| I70.318 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, other extremity |
| I70.321 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, right leg |
| I70.322 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, left leg |
| I70.323 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, bilateral legs |
| I70.328 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, other extremity |
| I70.331 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of thigh |
| I70.332 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of calf |
| I70.333 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of ankle |
| I70.334 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of heel and midfoot |
| I70.335 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of other part of foot |
| I70.338 | Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of other part of lower leg |
| I70.341 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of thigh |
| I70.342 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of calf |
| I70.343 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of ankle |
| I70.344 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of heel and midfoot |
| I70.345 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of other part of foot |
| I70.348 | Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of other part of lower leg |
| I70.35 | Atherosclerosis of unspecified type of bypass graft(s) of other extremity with ulceration |
| I70.361 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, right leg |
| I70.362 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, left leg |
| I70.363 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, bilateral legs |
| I70.368 | Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, other extremity |
| I70.391 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities, right leg |
| I70.392 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities, left leg |
| I70.393 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities, bilateral legs |
| I70.398 | Other atherosclerosis of unspecified type of bypass graft(s) of the extremities, other extremity |
| I70.401 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, right leg |
| I70.402 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, left leg |
| I70.403 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, bilateral legs |
| I70.408 | Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, other extremity |
| I70.411 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, right leg |
| I70.412 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, left leg |
| I70.413 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
| I70.418 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, other extremity |
| I70.421 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain, right leg |
| I70.422 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain, left leg |
| I70.423 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain, bilateral legs |
| I70.428 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with rest pain, other extremity |
| I70.431 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of thigh |
| I70.432 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of calf |
| I70.433 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of ankle |
| I70.434 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of heel and midfoot |
| I70.435 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of other part of foot |
| I70.438 | Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of other part of lower leg |
| I70.441 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of thigh |
| I70.442 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of calf |
| I70.443 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of ankle |
| I70.444 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of heel and midfoot |
| I70.445 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of other part of foot |
| I70.448 | Atherosclerosis of autologous vein bypass graft(s) of the left leg with ulceration of other part of lower leg |
| I70.45 | Atherosclerosis of autologous vein bypass graft(s) of other extremity with ulceration |
| I70.461 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, right leg |
| I70.462 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, left leg |
| I70.463 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, bilateral legs |
| I70.468 | Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, other extremity |
| I70.491 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, right leg |
| I70.492 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, left leg |
| I70.493 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, bilateral legs |
| I70.498 | Other atherosclerosis of autologous vein bypass graft(s) of the extremities, other extremity |
| I70.501 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, right leg |
| I70.502 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, left leg |
| I70.503 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, bilateral legs |
| I70.508 | Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, other extremity |
| I70.511 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, right leg |
| I70.512 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, left leg |
| I70.513 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
| I70.518 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, other extremity |
| I70.521 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, right leg |
| I70.522 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, left leg |
| I70.523 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, bilateral legs |
| I70.528 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest pain, other extremity |
| I70.531 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of thigh |
| I70.532 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of calf |
| I70.533 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of ankle |
| I70.534 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of heel and midfoot |
| I70.535 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of other part of foot |
| I70.538 | Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration of other part of lower leg |
| I70.541 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of thigh |
| I70.542 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of calf |
| I70.543 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of ankle |
| I70.544 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of heel and midfoot |
| I70.545 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of other part of foot |
| I70.548 | Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of other part of lower leg |
| I70.561 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, right leg |
| I70.562 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, left leg |
| I70.563 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, bilateral legs |
| I70.568 | Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, other extremity |
| I70.591 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, right leg |
| I70.592 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, left leg |
| I70.593 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, bilateral legs |
| I70.598 | Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, other extremity |
| I70.601 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, right leg |
| I70.602 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, left leg |
| I70.603 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, bilateral legs |
| I70.608 | Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, other extremity |
| I70.611 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, right leg |
| I70.612 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, left leg |
| I70.613 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
| I70.618 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, other extremity |
| I70.621 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, right leg |
| I70.622 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, left leg |
| I70.623 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, bilateral legs |
| I70.628 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with rest pain, other extremity |
| I70.631 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of thigh |
| I70.632 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of calf |
| I70.633 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of ankle |
| I70.634 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of heel and midfoot |
| I70.635 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of other part of foot |
| I70.638 | Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of other part of lower leg |
| I70.641 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of thigh |
| I70.642 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of calf |
| I70.643 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of ankle |
| I70.644 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of heel and midfoot |
| I70.645 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of other part of foot |
| I70.648 | Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of other part of lower leg |
| I70.65 | Atherosclerosis of nonbiological bypass graft(s) of other extremity with ulceration |
| I70.661 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, right leg |
| I70.662 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, left leg |
| I70.663 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, bilateral legs |
| I70.668 | Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene, other extremity |
| I70.691 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities, right leg |
| I70.692 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities, left leg |
| I70.693 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities, bilateral legs |
| I70.698 | Other atherosclerosis of nonbiological bypass graft(s) of the extremities, other extremity |
| I70.701 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, right leg |
| I70.702 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, left leg |
| I70.703 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, bilateral legs |
| I70.708 | Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, other extremity |
| I70.711 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, right leg |
| I70.712 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, left leg |
| I70.713 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, bilateral legs |
| I70.718 | Atherosclerosis of other type of bypass graft(s) of the extremities with intermittent claudication, other extremity |
| I70.721 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, right leg |
| I70.722 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, left leg |
| I70.723 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, bilateral legs |
| I70.728 | Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, other extremity |
| I70.731 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of thigh |
| I70.732 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of calf |
| I70.733 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of ankle |
| I70.734 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of heel and midfoot |
| I70.735 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of other part of foot |
| I70.738 | Atherosclerosis of other type of bypass graft(s) of the right leg with ulceration of other part of lower leg |
| I70.741 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of thigh |
| I70.742 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of calf |
| I70.743 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of ankle |
| I70.744 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of heel and midfoot |
| I70.745 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of other part of foot |
| I70.748 | Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration of other part of lower leg |
| I70.75 | Atherosclerosis of other type of bypass graft(s) of other extremity with ulceration |
| I70.761 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, right leg |
| I70.762 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, left leg |
| I70.763 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, bilateral legs |
| I70.768 | Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene, other extremity |
| I70.791 | Other atherosclerosis of other type of bypass graft(s) of the extremities, right leg |
| I70.792 | Other atherosclerosis of other type of bypass graft(s) of the extremities, left leg |
| I70.793 | Other atherosclerosis of other type of bypass graft(s) of the extremities, bilateral legs |
| I70.798 | Other atherosclerosis of other type of bypass graft(s) of the extremities, other extremity |
| I70.8 | Atherosclerosis of other arteries |
| I70.90 | Unspecified atherosclerosis |
| I70.91 | Generalized atherosclerosis |
| I70.92 | Chronic total occlusion of artery of the extremities |
| I73.9 | Peripheral vascular disease, unspecified |
| I74.2 | Embolism and thrombosis of arteries of the upper extremities |
| I74.3 | Embolism and thrombosis of arteries of the lower extremities |
| I74.5 | Embolism and thrombosis of iliac artery |
| I74.8 | Embolism and thrombosis of other arteries |
| I75.011 | Atheroembolism of right upper extremity |
| I75.012 | Atheroembolism of left upper extremity |
| I75.013 | Atheroembolism of bilateral upper extremities |
| I75.021 | Atheroembolism of right lower extremity |
| I75.022 | Atheroembolism of left lower extremity |
| I75.023 | Atheroembolism of bilateral lower extremities |
| I76 | Septic arterial embolism |
Frequently asked questions
Which ICD-10 codes support medical necessity for CPT C9765?
Medicare coverage policies (LCDs/NCDs and Billing & Coding articles) list 212 ICD-10 diagnosis codes that support medical necessity for CPT C9765. The covered codes are listed on this page. Coverage varies by MAC/state — always confirm against the policy that applies to you.
What is a medical-necessity (LCD/NCD) crosswalk?
A claim whose procedure isn't supported by a covered diagnosis denies as "not medically necessary" (CARC 50). CMS coverage policies define which diagnoses justify a procedure; this page is the ICD-10 → CPT C9765 view of that relationship.
Catch medical-necessity denials before you bill. CareNiva scrubs claims against LCD/NCD coverage and flags unsupported diagnoses — in the same platform you run visits and billing.
More free billing tools: all crosswalks · NCCI edits · Medicare fees · denial codes
Informational only, not coding, billing, or legal advice. Based on CMS Medicare Coverage Database data; verify the current LCD/NCD for your MAC before billing.
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