I70.648

Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of other part of lower leg

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC V28

HCC263

Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene

HCC383

Chronic Ulcer of Skin, Except Pressure, Not Specified as Through to Bone or Muscle

CMS-HCC ESRD V24

HCC106

Atherosclerosis of the Extremities with Ulceration or Gangrene

HCC161

Chronic Ulcer of Skin, Except Pressure

RxHCC V08

RXHCC311

Chronic Ulcer of Skin, Except Pressure

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

Inherited from I70.64Athscl nonbiological bypass of the left leg w ulceration
Includes

any condition classifiable to I70.612 and I70.622 chronic limb-threatening ischemia of nonbiological bypass graft(s) of the left leg with ulceration critical limb ischemia of nonbiological bypass graft(s) of the left leg with ulceration

Use additional

code to identify severity of ulcer (L97.-)

Inherited from I70.6Athscl nonbiological bypass graft(s) of the extremities
Use additional

code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)

Inherited from I70Atherosclerosis
Includes

arteriolosclerosis arterial degeneration arteriosclerosis arteriosclerotic vascular disease arteriovascular degeneration atheroma endarteritis deformans or obliterans senile arteritis senile endarteritis vascular degeneration

Excludes 2

arteriosclerotic cardiovascular disease (I25.1-) arteriosclerotic heart disease (I25.1-) atheroembolism (I75.-) cerebral atherosclerosis (I67.2) coronary atherosclerosis (I25.1-) mesenteric atherosclerosis (K55.1) precerebral atherosclerosis (I67.2) primary pulmonary atherosclerosis (I27.0)

Use additional

code to identify: exposure to environmental tobacco smoke (Z77.22) history of tobacco dependence (Z87.891) occupational exposure to environmental tobacco smoke (Z57.31) tobacco dependence (F17.-) tobacco use (Z72.0)

Inherited from chapter 9Diseases of the circulatory system
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) systemic connective tissue disorders (M30-M36) transient cerebral ischemic attacks and related syndromes (G45.-)

Official Guidelines for I70.648

FY 2026 ›