N80.A42 (Superficial endometriosis of left ureter) compared with N80.A49 (Superficial endometriosis of unspecified ureter), from the official CMS tabular data. N80.A42 and N80.A49 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. N80.A42 and N80.A49 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.
| N80.A42Superficial endometriosis of left ureter | N80.A49Superficial endometriosis of unspecified ureter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | N00-N99 — Diseases of the genitourinary system | N00-N99 — Diseases of the genitourinary system |
| Definition | Superficial endometriosis of left ureter is a billable ICD-10-CM diagnosis code (N80.A42). | Superficial endometriosis of unspecified ureter is a billable ICD-10-CM diagnosis code (N80.A49). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources