G71.3 vs H47.21
G71.3 (Mitochondrial myopathy, not elsewhere classified) compared with H47.21 (Primary optic atrophy), 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. G71.3 carries an Excludes1 note covering H47.21: “Leber's disease (H47.21)”
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
| G71.3Mitochondrial myopathy, not elsewhere classified | H47.21Primary optic atrophy | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) |
| Definition | Mitochondrial myopathy, not elsewhere classified is a billable ICD-10-CM diagnosis code (G71.3). | Primary optic atrophy is a non-billable ICD-10-CM category code (H47.21). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources