Is H26 a billable ICD-10-CM code?

No. H26 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does H26 sit in the tabular list?

Diseases of the eye and adnexa (H00-H59), in the block Disorders of lens (H25-H28).

What cannot be coded together with H26?

H26 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

H26

H26 — Other cataract

Non-billable headerICD-10-CM

H26 is a non-billable header ICD-10-CM code for other cataract. 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 cataract (Q12.0)

Other codes that can never be billed with H26

These codes carry an Excludes1 note pointing at H26. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading H26 alone.

H59Intraoperative and postprocedural complications and disorders of eye and adnexa, not elsewhere classified

Risk adjustment

H26 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 H26

7 child codes. Green means billable.

Questions about H26

Is H26 a billable ICD-10-CM code?: No. H26 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H26 sit in the tabular list?: Diseases of the eye and adnexa (H00-H59), in the block Disorders of lens (H25-H28).
What cannot be coded together with H26?: H26 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.