G45.3 vs H34.8311
G45.3 (Amaurosis fugax) compared with H34.8311 (Tributary (branch) retinal vein occlusion, right eye, with retinal neovascularization), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. H34.8311 carries an Excludes1 note covering G45.3: “amaurosis fugax (G45.3)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| G45.3Amaurosis fugax | H34.8311Tributary (branch) retinal vein occlusion, right eye, with retinal neovascularization | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) |
| Definition | Amaurosis fugax is a billable ICD-10-CM diagnosis code (G45.3). | Tributary (branch) retinal vein occlusion, right eye, with retinal neovascularization is a billable ICD-10-CM diagnosis code (H34.8311). |
| 7th character | — | One of the following 7th characters is to be assigned to codes in subcategory H34.83 to designate the severity of the occlusion: |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources