Is H21.1X a billable ICD-10-CM code?

No. H21.1X is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does H21.1X sit in the tabular list?

Diseases of the eye and adnexa (H00-H59), in the block Disorders of sclera, cornea, iris and ciliary body (H15-H22).

H21.1X

H21.1X — Other vascular disorders of iris and ciliary body

Non-billable headerICD-10-CM

H21.1X is a non-billable header ICD-10-CM code for other vascular disorders of iris and ciliary body. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

H21.1X 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 H21.1X

4 child codes. Green means billable.

H21.1X1Other vascular disorders of iris and ciliary body, right eye
H21.1X2Other vascular disorders of iris and ciliary body, left eye
H21.1X3Other vascular disorders of iris and ciliary body, bilateral
H21.1X9Other vascular disorders of iris and ciliary body, unspecified eye

Questions about H21.1X

Is H21.1X a billable ICD-10-CM code?: No. H21.1X is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H21.1X sit in the tabular list?: Diseases of the eye and adnexa (H00-H59), in the block Disorders of sclera, cornea, iris and ciliary body (H15-H22).