Neoplasm of uncertain behavior of urinary organs (D41) ICD-10-CM
The D41 code range covers neoplasm of uncertain behavior of urinary organs with 17 ICD-10-CM diagnosis codes. 13 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the D41 Range 17 codes · 13 billable
- D41 Neoplasm of uncertain behavior of urinary organsNon-billable
- D41.0 Neoplasm of uncertain behavior of kidneyNon-billable
- D41.00 Neoplasm of uncertain behavior of unspecified kidney
- D41.01 Neoplasm of uncertain behavior of right kidney
- D41.02 Neoplasm of uncertain behavior of left kidney
- D41.1 Neoplasm of uncertain behavior of renal pelvisNon-billable
- D41.10 Neoplasm of uncertain behavior of unspecified renal pelvis
- D41.11 Neoplasm of uncertain behavior of right renal pelvis
- D41.12 Neoplasm of uncertain behavior of left renal pelvis
- D41.2 Neoplasm of uncertain behavior of ureterNon-billable
- D41.20 Neoplasm of uncertain behavior of unspecified ureter
- D41.21 Neoplasm of uncertain behavior of right ureter
- D41.22 Neoplasm of uncertain behavior of left ureter
- D41.3 Neoplasm of uncertain behavior of urethra
- D41.4 Neoplasm of uncertain behavior of bladder
- D41.8 Neoplasm of uncertain behavior of other specified urinary organs
- D41.9 Neoplasm of uncertain behavior of unspecified urinary organ
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the D41 range.
Urachus
An embryonic structure originating from the ALLANTOIS. It is a canal connecting the fetal URINARY BLADDER and the UMBILICUS. It is normally converted into a fibrous cord postnatally. When the canal fails to be filled and remains open (patent urachus), urine leaks through the umbilicus.
About the D41 Code Range
The ICD-10 code section D41 is used to classify neoplasms of uncertain behavior specifically affecting urinary organs. These codes apply when it is unclear whether the growth is benign or malignant, covering various parts such as the kidneys, renal pelvis, ureters, urethra, bladder, and other specified urinary organs.
This range includes detailed subcodes like D41.0 for uncertain kidney neoplasms—sometimes referred to as mesoblastic nephroma—and distinguishes between right (D41.01) and left kidneys (D41.02). It similarly covers neoplasms of the renal pelvis (D41.1), ureters (D41.2), urethra (D41.3), and bladder (D41.4), noting synonyms such as neoplasm of the urinary bladder wall or trigone area. For unspecified urinary sites, D41.9 captures uncertain behavior neoplasms broadly. These codes help medical coders find the precise ICD-10 code for conditions where urinary tumors cannot yet be definitively classified as benign or malignant, improving documentation and treatment planning.
Questions About This Page
How many billable codes are in the D41 range?
Of the 17 codes in this range, 13 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the D41 range classify?
The range classifies neoplasm of uncertain behavior of urinary organs. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
