M89.021 (Algoneurodystrophy, right upper arm) compared with M89.022 (Algoneurodystrophy, left upper arm), from the official CMS tabular data. M89.021 and M89.022 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. M89.021 and M89.022 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.
| M89.021Algoneurodystrophy, right upper arm | M89.022Algoneurodystrophy, left upper arm | |
|---|---|---|
| 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 | Algoneurodystrophy, right upper arm is a billable ICD-10-CM diagnosis code (M89.021). | Algoneurodystrophy, left upper arm is a billable ICD-10-CM diagnosis code (M89.022). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources