H05.821 (Myopathy of extraocular muscles, right orbit) compared with H05.829 (Myopathy of extraocular muscles, unspecified orbit), from the official CMS tabular data. H05.821 and H05.829 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. H05.821 and H05.829 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.
| H05.821Myopathy of extraocular muscles, right orbit | H05.829Myopathy of extraocular muscles, unspecified orbit | |
|---|---|---|
| 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 | Myopathy of extraocular muscles, right orbit is a billable ICD-10-CM diagnosis code (H05.821). | Myopathy of extraocular muscles, unspecified orbit is a billable ICD-10-CM diagnosis code (H05.829). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources