M90.641 (Osteitis deformans in neoplastic diseases, right hand) compared with M90.642 (Osteitis deformans in neoplastic diseases, left hand), from the official CMS tabular data. M90.641 and M90.642 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. M90.641 and M90.642 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.
| M90.641Osteitis deformans in neoplastic diseases, right hand | M90.642Osteitis deformans in neoplastic diseases, left 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 | Osteitis deformans in neoplastic diseases, right hand is a billable ICD-10-CM diagnosis code (M90.641). | Osteitis deformans in neoplastic diseases, left hand is a billable ICD-10-CM diagnosis code (M90.642). |
| Code first | the neoplasm (C40.-, C41.-) | the neoplasm (C40.-, C41.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources