I70

Non-Billable

ChapterI00–I99

Rankcategory

Official Description

Atherosclerosis

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 9: Diseases of the Circulatory System (I00-I99).

CH9 Parent Instructions

Excludes2(Not included here)

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.-)

Instructional Notes

Includes

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

Excludes2(Not included here)

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

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)

Clinical Hierarchy

CH9Diseases of the circulatory system (I00-I99)

I70-I79Diseases of arteries, arterioles and capillaries (I70-I79)

I70Atherosclerosis

I70.0Atherosclerosis of aorta

I70.1Atherosclerosis of renal artery

I70.2Atherosclerosis of native arteries of the extremities

I70.3Atherosclerosis of unspecified type of bypass graft(s) of the extremities

I70.4Atherosclerosis of autologous vein bypass graft(s) of the extremities

I70.5Atherosclerosis of nonautologous biological bypass graft(s) of the extremities

I70.6Atherosclerosis of nonbiological bypass graft(s) of the extremities

I70.7Atherosclerosis of other type of bypass graft(s) of the extremities

I70.8Atherosclerosis of other arteries

I70.9Other and unspecified atherosclerosis

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I70:

chapterCH9

Diseases of the circulatory system (I00-I99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to I70. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths

Aortitis (nonsyphilitic) (calcific)1 unique routes

arteriosclerotic→I70

Arteriosclerosis, arteriosclerotic (diffuse) (obliterans) (of) (senile) (with calcification)24 unique routes

Direct index entry→I70

aorta→I70

extremities (native arteries)→I70(22 variants)

bypass graft→I70(21 variants)

autologous vein graft→I70(20 variants)

leg→I70(19 variants)

bilateral→I70(5 variants)

specified type NEC→I70