I87.013 (Postthrombotic syndrome with ulcer of bilateral lower extremity) compared with I87.019 (Postthrombotic syndrome with ulcer of unspecified lower extremity), from the official CMS tabular data. I87.013 and I87.019 code the same condition on opposite sides. MedCoder-derived
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. I87.013 and I87.019 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.
| I87.013Postthrombotic syndrome with ulcer of bilateral lower extremity | I87.019Postthrombotic syndrome with ulcer of unspecified lower extremity | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Postthrombotic syndrome with ulcer of bilateral lower extremity is a billable ICD-10-CM diagnosis code (I87.013). | Postthrombotic syndrome with ulcer of unspecified lower extremity is a billable ICD-10-CM diagnosis code (I87.019). |
| Use additional code | code to specify site and severity of ulcer (L97.-) | code to specify site and severity of ulcer (L97.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources