M25.372 (Other instability, left ankle) compared with M25.373 (Other instability, unspecified ankle), from the official CMS tabular data. M25.372 and M25.373 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. M25.372 and M25.373 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.
| M25.372Other instability, left ankle | M25.373Other instability, unspecified ankle | |
|---|---|---|
| Billing status | Billable | Billable |
| 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 | Other instability, left ankle is a billable ICD-10-CM diagnosis code (M25.372). | Other instability, unspecified ankle is a billable ICD-10-CM diagnosis code (M25.373). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources