7. DISEASES OF THE CIRCULATORY SYSTEM (390-459)
DISEASES OF ARTERIES, ARTERIOLES, AND CAPILLARIES (440-449)
440: Atherosclerosis
Includes:
arteriolosclerosis
arteriosclerosis (obliterans) (senile)
arteriosclerotic vascular disease
atheroma
degeneration:
arterial
arteriovascular
vascular
endarteritis deformans or obliterans
senile:
arteritis
endarteritis
Excludes:
atheroembolism (445.01-445.89)
atherosclerosis of bypass graft of the extremities (440.30-440.32)
441: Aortic aneurysm and dissection
Excludes:
aortic ectasia (447.70-447.73)
syphilitic aortic aneurysm (093.0)
traumatic aortic aneurysm (901.0, 902.0)
442: Other aneurysm
Includes:
aneurysm (ruptured) (cirsoid) (false) (varicose)
aneurysmal varix
Excludes:
arteriovenous aneurysm or fistula:
acquired (447.0)
congenital (747.60-747.69)
traumatic (900.0-904.9)
443: Other peripheral vascular disease
444: Arterial embolism and thrombosis
Includes:
infarction:
embolic
thrombotic
occlusion
Excludes:
atheroembolism (445.01-445.89)
septic arterial embolism (449)
that complicating:
abortion (634-638 with.6, 639.6)
ectopic or molar pregnancy (639.6)
pregnancy, childbirth, or the puerperium (673.0-673.8)
445: Atheroembolism
Includes:
Atherothrombotic microembolism
Cholesterol embolism
446: Polyarteritis nodosa and allied conditions
447: Other disorders of arteries and arterioles
448: Disease of capillaries
449: Septic arterial embolism
Code first underlying infection, such as:
infective endocarditis (421.0)
lung abscess (513.0)
Use additional code to identify the site of the embolism (433.0-433.9, 444.01-444.9)
Excludes:
septic pulmonary embolism (415.12)

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