I82.491 (Acute embolism and thrombosis of other specified deep vein of right lower extremity) compared with I82.499 (Acute embolism and thrombosis of other specified deep vein of unspecified lower extremity), from the official CMS tabular data. I82.491 and I82.499 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. I82.491 and I82.499 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.
| I82.491Acute embolism and thrombosis of other specified deep vein of right lower extremity | I82.499Acute embolism and thrombosis of other specified deep vein of unspecified lower extremity | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | I00-I99 — Diseases of the circulatory system | I00-I99 — Diseases of the circulatory system |
| Definition | Acute embolism and thrombosis of other specified deep vein of right lower extremity is a billable ICD-10-CM diagnosis code (I82.491). | Acute embolism and thrombosis of other specified deep vein of unspecified lower extremity is a billable ICD-10-CM diagnosis code (I82.499). |
| 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