2023/2022

  1. ICD-10-CM Codes
    2. ›
  2. C00-D49 Neoplasms
    3. ›
  3. C64-C68 Malignant neoplasms of urinary tract
    4. ›
  4. C66- Malignant neoplasm of ureter
    5. ›
  5. 2023 ICD-10-CM Diagnosis Code C66

2023 ICD-10-CM Diagnosis Code C66

Malignant neoplasm of ureter

    2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
  • C66 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2023 edition of ICD-10-CM C66 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of C66 - other international versions of ICD-10 C66 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as C66. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • malignant neoplasm of ureteric orifice of bladder (
    ICD-10-CM Diagnosis Code C67.6

    Malignant neoplasm of ureteric orifice

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    C67.6
    )
The following code(s) above C66 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to C66:
  • C00-D49
    2023 ICD-10-CM Range C00-D49

    Neoplasms

    Note
    • Functional activity
    • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
    • Morphology [Histology]
    • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
    • Primary malignant neoplasms overlapping site boundaries
    • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
    • Malignant neoplasm of ectopic tissue
    • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
    Neoplasms
Clinical Information
  • A primary or metastatic malignant tumor involving the ureter. The majority are carcinomas.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
ICD-10-CM Codes Adjacent To C66
C63.8 Malignant neoplasm of overlapping sites of male genital organs
C63.9 Malignant neoplasm of male genital organ, unspecified
C64 Malignant neoplasm of kidney, except renal pelvis
C64.1 Malignant neoplasm of right kidney, except renal pelvis
C64.2 Malignant neoplasm of left kidney, except renal pelvis
C64.9 Malignant neoplasm of unspecified kidney, except renal pelvis
C65 Malignant neoplasm of renal pelvis
C65.1 Malignant neoplasm of right renal pelvis
C65.2 Malignant neoplasm of left renal pelvis
C65.9 Malignant neoplasm of unspecified renal pelvis
C66 Malignant neoplasm of ureter
C66.1 Malignant neoplasm of right ureter
C66.2 Malignant neoplasm of left ureter
C66.9 Malignant neoplasm of unspecified ureter
C67 Malignant neoplasm of bladder
C67.0 Malignant neoplasm of trigone of bladder
C67.1 Malignant neoplasm of dome of bladder
C67.2 Malignant neoplasm of lateral wall of bladder
C67.3 Malignant neoplasm of anterior wall of bladder
C67.4 Malignant neoplasm of posterior wall of bladder
C67.5 Malignant neoplasm of bladder neck

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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