M12.411 (Intermittent hydrarthrosis, right shoulder) compared with M12.419 (Intermittent hydrarthrosis, unspecified shoulder), from the official CMS tabular data. M12.411 and M12.419 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. M12.411 and M12.419 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.
| M12.411Intermittent hydrarthrosis, right shoulder | M12.419Intermittent hydrarthrosis, unspecified shoulder | |
|---|---|---|
| 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 | Intermittent hydrarthrosis, right shoulder is a billable ICD-10-CM diagnosis code (M12.411). | Intermittent hydrarthrosis, unspecified shoulder is a billable ICD-10-CM diagnosis code (M12.419). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources