M61.321 (Calcification and ossification of muscles associated with burns, right upper arm) compared with M61.322 (Calcification and ossification of muscles associated with burns, left upper arm), from the official CMS tabular data. M61.321 and M61.322 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. M61.321 and M61.322 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.
| M61.321Calcification and ossification of muscles associated with burns, right upper arm | M61.322Calcification and ossification of muscles associated with burns, left upper arm | |
|---|---|---|
| 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 | Calcification and ossification of muscles associated with burns, right upper arm is a billable ICD-10-CM diagnosis code (M61.321). | Calcification and ossification of muscles associated with burns, left upper arm is a billable ICD-10-CM diagnosis code (M61.322). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources