DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C66 Malignant neoplasm of ureter

  • Header · not billable

C66 is not billable. The category heads 3 billable codes in FY2027: the 3 codes directly below it.

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C64-C68 Malignant neoplasms of urinary tract (C64-C68)
  3. C66 Malignant neoplasm of ureter
Billable codes
3
Subdivisions
3
CC / MCC codes
3 / 0
HCC V28 codes
3
New FY2027
0
Index entries
0

Codes in C66

  1. C66.1
    Malignant neoplasm of right ureter
    BillableCC22
  2. C66.2
    Malignant neoplasm of left ureter
    BillableCC22
  3. C66.9
    Malignant neoplasm of unspecified ureter
    BillableCC22

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At C66

Excludes1

  • malignant neoplasm of ureteric orifice of bladder (C67.6) C67.6

Notes that also apply

Chapter 2 instructions (Notes 8): printed on the chapter 2 page.

Hierarchy