Is H40.112 a billable ICD-10-CM code?

No. H40.112 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does H40.112 sit in the tabular list?

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

What cannot be coded together with H40.112?

H40.112 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above H40.112 (H40) and apply to it just the same.

H40.112

H40.112 — Primary open-angle glaucoma, left eye

Non-billable headerICD-10-CMleft

H40.112 is a non-billable header ICD-10-CM code for primary open-angle glaucoma, left eye. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

One of the following 7th characters is to be assigned to each code in subcategory H40.11 to designate the stage of glaucoma

0: stage unspecified
1: mild stage
2: moderate stage
3: severe stage
4: indeterminate stage

Excludes1 inherited from the categories above H40.112

These are not written on H40.112, but they bind it: a note on a category applies to every code beneath it. Billing H40.112 with anything listed here is a denial.

Written on H40 — Glaucoma

absolute glaucoma (H44.51-)
congenital glaucoma (Q15.0)
traumatic glaucoma due to birth injury (P15.3)

Risk adjustment

H40.112 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 history

H40.112 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead H40.112

5 child codes. Green means billable.

Related codes at this level

Codes that share H40.11. If H40.112 is not quite right, the correct code is usually one of these.

Questions about H40.112

Is H40.112 a billable ICD-10-CM code?: No. H40.112 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H40.112 sit in the tabular list?: Diseases of the eye and adnexa (H00-H59), in the block Glaucoma (H40-H42).
What cannot be coded together with H40.112?: H40.112 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above H40.112 (H40) and apply to it just the same.