Is I79.1 a billable ICD-10-CM code?

Yes. I79.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does I79.1 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).

What cannot be coded together with I79.1?

I79.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

I79.1

I79.1 — Aortitis in diseases classified elsewhere

Billable / specific codeICD-10-CM

I79.1 is a billable, specific ICD-10-CM code for aortitis in diseases classified elsewhere. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

syphilitic aortitis (A52.02)

Code first

The underlying condition must be sequenced before this code.

underlying disease

Risk adjustment

I79.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

I79.1 is named in 14 Medicare coverage policies — 14 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52996Billing and Coding: Routine Foot Care
A56625Billing and Coding: Echocardiography
A56682Billing and Coding: Diagnostic Abdominal Aortography and Renal Angiography
A56697Billing and Coding: Non-Invasive Vascular Studies

Related codes at this level

Codes that share I79. If I79.1 is not quite right, the correct code is usually one of these.

Questions about I79.1

Is I79.1 a billable ICD-10-CM code?: Yes. I79.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I79.1 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).
What cannot be coded together with I79.1?: I79.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.