H40.1213 (Low-tension glaucoma, right eye, severe stage) compared with H40.1223 (Low-tension glaucoma, left eye, severe stage), from the official CMS tabular data. H40.1213 and H40.1223 code the same condition on opposite sides.
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. H40.1213 and H40.1223 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| H40.1213Low-tension glaucoma, right eye, severe stage | H40.1223Low-tension glaucoma, left eye, severe stage | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) |
| Definition | Low-tension glaucoma, right eye, severe stage is a billable ICD-10-CM diagnosis code (H40.1213). | Low-tension glaucoma, left eye, severe stage is a billable ICD-10-CM diagnosis code (H40.1223). |
| 7th character | One of the following 7th characters is to be assigned to each code in subcategory H40.12 to designate the stage of glaucoma | One of the following 7th characters is to be assigned to each code in subcategory H40.12 to designate the stage of glaucoma |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources