Is H40.84 a billable ICD-10-CM code?

No. H40.84 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does H40.84 sit in the tabular list?

Diseases of the eye and adnexa (H00-H59), in the block Glaucoma (H40-H42).

H40.84

H40.84 — Neovascular secondary angle closure glaucoma

Non-billable headerICD-10-CM

H40.84 is a non-billable header ICD-10-CM code for neovascular secondary angle closure glaucoma. It cannot be billed on its own: choose one of the more specific child codes below.

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

the underlying condition such as:
central retinal vein occlusion (H34.81)
diabetes mellitus (E08.39, E09.39, E10.39, E11.39, E13.39)
retinal ischemia (H35.82)

Other codes that can never be billed with H40.84

These codes carry an Excludes1 note pointing at H40.84. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading H40.84 alone.

H42Glaucoma in diseases classified elsewhere

Risk adjustment

H40.84 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 H40.84

4 child codes. Green means billable.

Related codes at this level

Codes that share H40.8. If H40.84 is not quite right, the correct code is usually one of these.

Questions about H40.84

Is H40.84 a billable ICD-10-CM code?: No. H40.84 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H40.84 sit in the tabular list?: Diseases of the eye and adnexa (H00-H59), in the block Glaucoma (H40-H42).