ICD-10 I70
Non-Billable HeaderAtherosclerosis
About ICD-10-CM I70
ICD-10-CM code I70 represents Atherosclerosis. This is a non-billable header code in the Circulatory System chapter (block I70). The 2026 edition of ICD-10-CM I70 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 2 Excludes
Not included here, the excluded code is not part of I70, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- 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)
Includes
- arteriolosclerosis
- arterial degeneration
- arteriosclerosis
- arteriosclerotic vascular disease
- arteriovascular degeneration
- atheroma
- endarteritis deformans or obliterans
- senile arteritis
- senile endarteritis
- vascular degeneration
Use Additional Code
When coding I70, also report these additional codes when applicable.
- 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)
Medicare LCD Coverage for I70
Local Coverage Determinations (LCDs) from CMS MACs that list I70 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I70.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but I70 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with I70
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 75820 Duplex scan of the extremities for peripheral artery disease Cardiovascular Disease
- 75822 Duplex scan of the carotid arteries for stroke evaluation Cardiovascular Disease
- 75860 Angiography of the extremities for peripheral artery disease Cardiovascular Disease
- 75861 Angiography of the carotid arteries for stroke evaluation Cardiovascular Disease
- 75862 Angiography of the abdominal aorta for aneurysm evaluation Cardiovascular Disease
- 75863 Angiography of the thoracic aorta for aneurysm evaluation Cardiovascular Disease
Codes Adjacent To I70
Other codes in section I70-I79 (Diseases of arteries, arterioles and capillaries).
ICD-10 I70, Billing FAQ
Is ICD-10 code I70 billable? +
No, I70 is a non-billable header code. Use a more specific child code from block I70 when submitting claims.
What codes are Type 2 Excludes for I70? +
Type 2 Excludes (may be coded together when both conditions exist): arteriosclerotic cardiovascular disease (I25.1-); arteriosclerotic heart disease (I25.1-); atheroembolism (I75.-)
What CPT codes are commonly billed with I70? +
Procedures frequently paired with I70 include: 75820, 75822, 75860, 75861, 75862.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 2, 2026.
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