M20.1 vs M71
M20.1 (Hallux valgus (acquired)) compared with M71 (Other bursopathies), 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. M71 carries an Excludes1 note covering M20.1: “bunion (M20.1)”
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
| M20.1Hallux valgus (acquired) | M71Other bursopathies | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Hallux valgus (acquired) is a non-billable ICD-10-CM category code (M20.1). | Other bursopathies is a non-billable ICD-10-CM category code (M71). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources