I82.A21 (Chronic embolism and thrombosis of right axillary vein) compared with I82.A22 (Chronic embolism and thrombosis of left axillary vein), from the official CMS tabular data. I82.A21 and I82.A22 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. I82.A21 and I82.A22 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.
| I82.A21Chronic embolism and thrombosis of right axillary vein | I82.A22Chronic embolism and thrombosis of left axillary vein | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Chronic embolism and thrombosis of right axillary vein is a billable ICD-10-CM diagnosis code (I82.A21). | Chronic embolism and thrombosis of left axillary vein is a billable ICD-10-CM diagnosis code (I82.A22). |
| Code first | venous embolism and thrombosis complicating: abortion, ectopic or molar pregnancy (O00-O07, O08.7) | venous embolism and thrombosis complicating: abortion, ectopic or molar pregnancy (O00-O07, O08.7) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources