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ICD-10-CM 2027 diagnosis code

D41.1Neoplasm of uncertain behavior of renal pelvis

Not billable — use a more specific code

D41.1 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 D41.1

D41.1 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of renal pelvis. It belongs to category D41 (neoplasm of uncertain behavior of urinary organs), block D37-D48 (neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes) 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.

Within D41 (neoplasm of uncertain behavior of urinary organs), D41.1 is specifically for neoplasm of uncertain behavior of renal pelvis. Related codes cover kidney (D41.0), ureter (D41.2), urethra (D41.3), bladder (D41.4), other specified urinary organs (D41.8) and unspecified urinary organ (D41.9).

To report this condition, pick the subcode that matches the documentation: D41.10 (pelvis), D41.11 (pelvis) and D41.12 (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 D41.1

Notes that apply from higher levels

Instructions written at a parent level also apply to D41.1.

Broader instructions also apply from D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes and Chapter 2: Neoplasms.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to D41.1.

Table of Drugs & Neoplasms entries

Codes whose notes reference D41.1

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 D41.1

Is D41.1 billable?

No. D41.1 is a header code. Report one of its more specific subcodes instead.