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ICD-10-CM 2027 diagnosis code

C65Malignant neoplasm of renal pelvis

Not billable — use a more specific code

C65 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About C65

C65 is the ICD-10-CM diagnosis code for malignant neoplasm of renal pelvis. It belongs to block C64-C68 (malignant neoplasms of urinary tract) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: C65.1 (pelvis), C65.2 (pelvis) and C65.9 (pelvis).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under C65

Coding notes

IncludesFurther defines the content of the category
  • malignant neoplasm of pelviureteric junction
  • malignant neoplasm of renal calyces

Notes that apply from higher levels

Instructions written at a parent level also apply to C65.

Broader instructions also apply from Chapter 2: Neoplasms.

Table of Drugs & Neoplasms entries

Codes whose notes reference C65

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about C65

Is C65 billable?

No. C65 is a header code. Report one of its more specific subcodes instead.