C66 — Malignant neoplasm of ureter
Not billable
Is C66 billable?
No — C66 is a non-billable header code. C66 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath C66.
Billable codes under this header
C66 at a glance
| Code | C66 |
|---|---|
| Description | Malignant neoplasm of ureter |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with C66 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- malignant neoplasm of ureteric orifice of bladder (C67.6)
What codes fall under C66? (3)
How long has C66 existed?
C66 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.