H11.0 vs H11.81
H11.0 (Pterygium of eye) compared with H11.81 (Pseudopterygium of conjunctiva), 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. H11.0 carries an Excludes1 note covering H11.81: “pseudopterygium (H11.81-)”
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
| H11.0Pterygium of eye | H11.81Pseudopterygium of conjunctiva | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) |
| Definition | Pterygium of eye is a non-billable ICD-10-CM category code (H11.0). | Pseudopterygium of conjunctiva is a non-billable ICD-10-CM category code (H11.81). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources