ICD-10-CM 2027 diagnosis code
H40.8Other glaucoma
H40.8 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About H40.8
H40.8 is the ICD-10-CM diagnosis code for other glaucoma. It belongs to category H40 (glaucoma), block H40-H42 (glaucoma) and chapter 7 (diseases of the eye and adnexa). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.
Within H40, choose H40.8 (Other glaucoma) only when documentation doesn't support a more specific option: suspect (H40.0), open-angle glaucoma (H40.1), primary angle-closure glaucoma (H40.2), secondary to eye trauma (H40.3), secondary to eye inflammation (H40.4), secondary to other eye disorders (H40.5), secondary to drugs (H40.6) and unspecified glaucoma (H40.9).
To report this condition, pick the subcode that matches the documentation: H40.81 (pressure), H40.82 (glaucoma), H40.83 (misdirection), H40.84 (glaucoma) and H40.89 (glaucoma).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under H40.8
- H40.81Glaucoma with increased episcleral venous pressure
- H40.811Glaucoma with increased episcleral venous pressure, right eyeBillable
- H40.812Glaucoma with increased episcleral venous pressure, left eyeBillable
- H40.813Glaucoma with increased episcleral venous pressure, bilateralBillable
- H40.819Glaucoma with increased episcleral venous pressure, unspecified eyeBillable
- H40.82Hypersecretion glaucoma
- H40.83Aqueous misdirection
- H40.84Neovascular secondary angle closure glaucoma
- H40.89Other specified glaucomaBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to H40.8.
› From H40 Glaucoma
Broader instructions also apply from Chapter 7: Diseases of the eye and adnexa.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about H40.8
Is H40.8 billable?
- No. H40.8 is a header code. Report one of its more specific subcodes instead.