M12.341 (Palindromic rheumatism, right hand) compared with M12.349 (Palindromic rheumatism, unspecified hand), from the official CMS tabular data. M12.341 and M12.349 code the same condition on opposite sides.
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. M12.341 and M12.349 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.
| M12.341Palindromic rheumatism, right hand | M12.349Palindromic rheumatism, unspecified hand | |
|---|---|---|
| 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 | Palindromic rheumatism, right hand is a billable ICD-10-CM diagnosis code (M12.341). | Palindromic rheumatism, unspecified hand is a billable ICD-10-CM diagnosis code (M12.349). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources