H40.21Non-billable (header)
Acute angle-closure glaucoma
Code Hierarchy
┌7Diseases of the eye and adnexa (H00-H59)├H40-H42Glaucoma (H40-H42)├H40Glaucoma
└H40.21Acute angle-closure glaucoma
Not sure between two codes?
⇄ Compare H40.21 with another code →