Is I10 a billable ICD-10-CM code?

Yes. I10 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does I10 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Hypertensive diseases (I10-I1A).

What cannot be coded together with I10?

I10 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

I10

I10 — Essential (primary) hypertension

Billable / specific codeICD-10-CM

I10 is a billable, specific ICD-10-CM code for essential (primary) hypertension. 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.

hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

essential (primary) hypertension involving vessels of brain (I60-I69)
essential (primary) hypertension involving vessels of eye (H35.0-)

Includes

Conditions this code covers.

high blood pressure
hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)

Risk adjustment

I10 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

I10 is named in 42 Medicare coverage policies — 42 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
A53026Billing and Coding: Bariatric Surgery Coverage
A54923Billing and Coding: Bariatric Surgery for Treatment of Co-Morbidities Conditions Related to Morbid Obesity
A56422Billing and Coding: Bariatric Surgical Management of Morbid Obesity

How I10 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I10.

Hypertension, hypertensive(accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)

Questions about I10

Is I10 a billable ICD-10-CM code?: Yes. I10 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I10 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Hypertensive diseases (I10-I1A).
What cannot be coded together with I10?: I10 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.