R22.31 (Localized swelling, mass and lump, right upper limb) compared with R22.32 (Localized swelling, mass and lump, left upper limb), from the official CMS tabular data. R22.31 and R22.32 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. R22.31 and R22.32 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.
| R22.31Localized swelling, mass and lump, right upper limb | R22.32Localized swelling, mass and lump, left upper limb | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Localized swelling, mass and lump, right upper limb is a billable ICD-10-CM diagnosis code (R22.31). | Localized swelling, mass and lump, left upper limb is a billable ICD-10-CM diagnosis code (R22.32). |
| Includes | subcutaneous nodules (localized)(superficial) | subcutaneous nodules (localized)(superficial) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources