Is H33.1 a billable ICD-10-CM code?

No. H33.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does H33.1 sit in the tabular list?

Diseases of the eye and adnexa (H00-H59), in the block Disorders of choroid and retina (H30-H36).

What cannot be coded together with H33.1?

H33.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

H33.1

H33.1 — Retinoschisis and retinal cysts

Non-billable headerICD-10-CM

H33.1 is a non-billable header ICD-10-CM code for retinoschisis and retinal cysts. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

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

congenital retinoschisis (Q14.1)
microcystoid degeneration of retina (H35.42-)

Risk adjustment

H33.1 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.

Code to one of these instead H33.1

4 child codes. Green means billable.

Related codes at this level

Codes that share H33. If H33.1 is not quite right, the correct code is usually one of these.

Questions about H33.1

Is H33.1 a billable ICD-10-CM code?: No. H33.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H33.1 sit in the tabular list?: Diseases of the eye and adnexa (H00-H59), in the block Disorders of choroid and retina (H30-H36).
What cannot be coded together with H33.1?: H33.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.