ICD-10-CM 2027 diagnosis code

C64Malignant neoplasm of kidney, except renal pelvis

Not billable — use a more specific code

C64 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Looking up by condition? See ICD-10 code for Nephroma, ICD-10 code for Wilms' tumor, ICD-10 code for Grawitz tumor, ICD-10 code for Hypernephroma.

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 C64

C64 is the ICD-10-CM diagnosis code for malignant neoplasm of kidney, except 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: C64.1 (pelvis), C64.2 (pelvis) and C64.9 (pelvis).

Don't report C64 together with the conditions in its Excludes1 note: malignant carcinoid tumor of the kidney (C7A.093), malignant neoplasm of renal calyces (C65.-) and malignant neoplasm of renal pelvis (C65.-).

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 C64

Coding notes

Excludes1Not coded here — never report together with this code

malignant carcinoid tumor of the kidney (C7A.093)
malignant neoplasm of renal calyces (C65.-)
malignant neoplasm of renal pelvis (C65.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to C64.

Broader instructions also apply from Chapter 2: Neoplasms.

Alphabetic index entries

12 entries

Terms in the official ICD-10-CM index that lead to C64.

Table of Drugs & Neoplasms entries

Neoplasm, neoplastic › kidney (parenchymal) — Malignant Primary
Neoplasm, neoplastic › parenchyma, kidney — Malignant Primary
Neoplasm, neoplastic › renal — Malignant Primary
Neoplasm, neoplastic › renal › parenchyma — Malignant Primary

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about C64

Is C64 billable?: No. C64 is a header code. Report one of its more specific subcodes instead.