G51.0 vs R29.810
G51.0 (Bell's palsy) compared with R29.810 (Facial weakness), 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. R29.810 carries an Excludes1 note covering G51.0: “Bell's palsy (G51.0)”
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
| G51.0Bell's palsy | R29.810Facial weakness | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Bell's palsy is a billable ICD-10-CM diagnosis code (G51.0). | Facial weakness is a billable ICD-10-CM diagnosis code (R29.810). |
| Includes | disorders of 7th cranial nerve Facial palsy | Facial droop |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources