H40.81Glaucoma with increased episcleral venous pressure

H40.81 is the ICD-10-CM diagnosis code for glaucoma with increased episcleral venous pressure. 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 4 subcodes must be used instead.

Within H40.8 (other glaucoma), H40.81 is specifically for glaucoma with increased episcleral venous pressure. Related codes cover hypersecretion glaucoma (H40.82), aqueous misdirection (H40.83), Neovascular secondary angle closure glaucoma (H40.84) and other specified glaucoma (H40.89).

To report this condition, pick the subcode that matches the documentation: H40.811 (right eye), H40.812 (left eye), H40.813 (bilateral) and H40.819 (unspecified eye).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.