ICD-10-CM 2027
ICD-10 code for Nephroma
From the official ICD-10-CM alphabetic index entry “Nephroma”. Page updated September 29, 2026.
About coding Nephroma
The ICD-10-CM code for Nephroma is C64 (Malignant neoplasm of kidney, except renal pelvis). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on C64.
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.
More specific Nephroma codes (official index)
- mesoblastic D41.0 — Neoplasm of uncertain behavior of kidney
Don't confuse with (Excludes1 for C64)
Common questions about Nephroma ICD-10 codes
What is the ICD-10 code for Nephroma?
- C64 — Malignant neoplasm of kidney, except renal pelvis (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: D41.0.
What is the ICD-10 code for mesoblastic nephroma?
- D41.0 — Neoplasm of uncertain behavior of kidney (header code; choose a more specific subcode).
Is C64 billable?
- No. C64 is a header code. Report one of its more specific subcodes instead.