M20.012 (Mallet finger of left finger(s)) compared with M20.019 (Mallet finger of unspecified finger(s)), from the official CMS tabular data. M20.012 and M20.019 code the same condition on opposite sides. MedCoder-derived
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. M20.012 and M20.019 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.
| M20.012Mallet finger of left finger(s) | M20.019Mallet finger of unspecified finger(s) | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | M00-M99 — Diseases of the musculoskeletal system and connective tissue | M00-M99 — Diseases of the musculoskeletal system and connective tissue |
| Definition | Mallet finger of left finger(s) is a billable ICD-10-CM diagnosis code (M20.012). | Mallet finger of unspecified finger(s) is a billable ICD-10-CM diagnosis code (M20.019). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources