I70 is the authoritative medical code for Atherosclerosis. This classification is used in medical billing and clinical recording to specify the clinical criteria for atherosclerosis (ICD-10-CM I70), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Atherosclerosis is a non-billable ICD-10-CM category code I70. A more specific billable subcode must be selected for claims submission. 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.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for I70 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- arteriolosclerosis
- arterial degeneration
- arteriosclerosis
- arteriosclerotic vascular disease
- arteriovascular degeneration
- atheroma
- endarteritis deformans or obliterans
- senile arteritis
- senile endarteritis
- vascular degeneration
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- 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
Supplementary codes the tabular list directs you to add.
- 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
Frequently Asked Questions (FAQ) & Clinical Guidance
Can I70 be billed directly?
No. I70 (Atherosclerosis) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Can I70 be reported alongside related conditions?
Per Excludes2 instructions, I70 and the following may both be reported when both are present: arteriosclerotic cardiovascular disease (I25.1-); arteriosclerotic heart disease (I25.1-); atheroembolism (I75.-); cerebral atherosclerosis (I67.2).
Is an additional code needed with I70?
Use additional code(s) to specify: code to identify:; exposure to environmental tobacco smoke (Z77.22); history of tobacco dependence (Z87.891); occupational exposure to environmental tobacco smoke (Z57.31).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as I70, with their registry titles.
- I70.0 — Atherosclerosis of aorta
- I70.1 — Atherosclerosis of renal artery
- I70.2 — Atherosclerosis of native arteries of the extremities
- I70.20 — Unspecified atherosclerosis of native arteries of extremities
- I70.201 — Unspecified atherosclerosis of native arteries of extremities, right leg
- I70.202 — Unspecified atherosclerosis of native arteries of extremities, left leg
- I70.203 — Unspecified atherosclerosis of native arteries of extremities, bilateral legs
- I70.208 — Unspecified atherosclerosis of native arteries of extremities, other extremity
- I70.209 — Unspecified atherosclerosis of native arteries of extremities, unspecified extremity
- I70.21 — Atherosclerosis of native arteries of extremities with intermittent claudication
- 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
- I70.219 — Atherosclerosis of native arteries of extremities with intermittent claudication, unspecified extremity
- I70.22 — Atherosclerosis of native arteries of extremities with rest pain
- 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
- I70.229 — Atherosclerosis of native arteries of extremities with rest pain, unspecified extremity
- I70.23 — Atherosclerosis of native arteries of right leg with ulceration
- 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
- I70.239 — Atherosclerosis of native arteries of right leg with ulceration of unspecified site
- I70.24 — Atherosclerosis of native arteries of left leg with ulceration
- 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
- I70.249 — Atherosclerosis of native arteries of left leg with ulceration of unspecified site
- I70.25 — Atherosclerosis of native arteries of other extremities with ulceration
- I70.26 — Atherosclerosis of native arteries of extremities with gangrene
- I70.261 — Atherosclerosis of native arteries of extremities with gangrene, right leg
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code I65
Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction
ICD Code I66
Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction
ICD Code I68
Cerebrovascular disorders in diseases classified elsewhere