L03.042 (Acute lymphangitis of left toe) compared with L03.049 (Acute lymphangitis of unspecified toe), from the official CMS tabular data. L03.042 and L03.049 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. L03.042 and L03.049 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.
| L03.042Acute lymphangitis of left toe | L03.049Acute lymphangitis of unspecified toe | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) |
| Definition | Acute lymphangitis of left toe is a billable ICD-10-CM diagnosis code (L03.042). | Acute lymphangitis of unspecified toe is a billable ICD-10-CM diagnosis code (L03.049). |
| Use additional code | code (B95-B97) to identify infectious agent. | code (B95-B97) to identify infectious agent. |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources