Is I83 a billable ICD-10-CM code?

No. I83 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does I83 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89).

I83

I83 — Varicose veins of lower extremities

Non-billable headerICD-10-CM

I83 is a non-billable header ICD-10-CM code for varicose veins of lower extremities. It cannot be billed on its own: choose one of the more specific child codes below.

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.

varicose veins complicating pregnancy (O22.0-)
varicose veins complicating the puerperium (O87.4)

Other codes that can never be billed with I83

These codes carry an Excludes1 note pointing at I83. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I83 alone.

I86Varicose veins of other sites
I87.2Venous insufficiency (chronic) (peripheral)
I87.3Chronic venous hypertension (idiopathic)

Risk adjustment

I83 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.

Code to one of these instead I83

5 child codes. Green means billable.

Questions about I83

Is I83 a billable ICD-10-CM code?: No. I83 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does I83 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89).