2027 ICD-10-CM Diagnosis Code D41.4Neoplasm of uncertain behavior of bladder

ICD-10-CM Codes›C00–D49›D37-D48›D41

ICD-10-CM D41.4
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

D41.4 is a billable ICD-10-CM diagnosis code for neoplasm of uncertain behavior of bladder. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 656 through 658, 686 through 688. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neoplasms of unspecified nature or uncertain behavior.

Code Identity

ICD-10-CM Code
D41.4
Billable Status
Yes — Valid for Submission
Code Describes
Neoplasm of uncertain behavior of bladder
Short Description
Neoplasm of uncertain behavior of bladder
Same as the full description in the CMS dataset.
Parent Code
D41
Neoplasm of uncertain behavior of urinary organs

Code Classification

ChapterC00–D49Neoplasms
SectionD37-D48Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
CategoryD41Neoplasm of uncertain behavior of urinary organs
This CodeD41.4Neoplasm of uncertain behavior of bladder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Mass of urinary bladder neck
  • Neoplasm of anterior wall of urinary bladder
  • Neoplasm of apex of urinary bladder
  • Neoplasm of dome of urinary bladder
  • Neoplasm of lateral wall of urinary bladder
  • Neoplasm of neck of urinary bladder
  • Neoplasm of posterior wall of urinary bladder
  • Neoplasm of trigone of urinary bladder
  • Neoplasm of uncertain behavior of anterior wall of urinary bladder
  • Neoplasm of uncertain behavior of apex of urinary bladder
  • Neoplasm of uncertain behavior of dome of urinary bladder
  • Neoplasm of uncertain behavior of lateral wall of urinary bladder
  • Neoplasm of uncertain behavior of parietal peritoneum
  • Neoplasm of uncertain behavior of posterior wall of urinary bladder
  • Neoplasm of uncertain behavior of trigone of urinary bladder
  • Neoplasm of uncertain behavior of urachus
  • Neoplasm of uncertain behavior of ureter
  • Neoplasm of uncertain behavior of ureteric orifice of urinary bladder
  • Neoplasm of uncertain behavior of urinary bladder
  • Neoplasm of uncertain behavior of urinary bladder neck
  • Neoplasm of urachus
  • Neoplasm of ureteric orifice of urinary bladder
  • Polyp of urinary bladder

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to D41.4: its own notes plus those printed at block D37-D48 and Chapter 2. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes applies to 137 codes
  • neoplasms of unspecified behavior (D49.-)

Notes

General instructions on how these codes are used.

From Block D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes applies to 137 codes
  • Categories D37-D44, and D48 classify by site neoplasms of uncertain behavior, i.e., histologic confirmation whether the neoplasm is malignant or benign cannot be made.
From Chapter 2 (C00-D49) Neoplasms applies to 1,730 codes
  • Functional activity
  • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Morphology [Histology]
  • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Primary malignant neoplasms overlapping site boundaries
  • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Malignant neoplasm of ectopic tissue
  • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name D41.4, its category, or a range that includes it.

Excludes2 2

These codes carry an Excludes2 note naming D41.4: its condition is not part of those codes, and both may be reported when the patient has both.

  • B07 Viral warts
    papilloma of bladder (D41.4)
  • D49 Neoplasms of unspecified behavior
    neoplasms of uncertain behavior (D37-D44, D48) names D37-D44, which includes this code

Notes 1

These notes mention D41.4.

  • Block D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
    Categories D37-D44, and D48 classify by site neoplasms of uncertain behavior, i.e., histologic confirmation whether the neoplasm is malignant or benign cannot be made. names D37-D44, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO072
Neoplasms of unspecified nature or uncertain behavior
Default principal diagnosis: inpatient Yes · outpatient Yes

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
bladder (urinary)C67.9C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › domeC67.1C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › neckC67.5C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › orificeC67.9C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › orifice › uretericC67.6C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › orifice › urethralC67.5C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › sphincterC67.8C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › trigoneC67.0C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › urachusC67.7C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › wallC67.9C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › wall › anteriorC67.3C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › wall › lateralC67.2C79.11D09.0D30.3D41.4D49.4
bladder (urinary) › wall › posteriorC67.4C79.11D09.0D30.3D41.4D49.4
urachusC67.7C79.11D09.0D30.3D41.4D49.4
ureter, ureteral › orifice (bladder)C67.6C79.11D09.0D30.3D41.4D49.4
ureter-bladder (junction)C67.6C79.11D09.0D30.3D41.4D49.4
urethra, urethral (gland) › orifice, internalC67.5C79.11D09.0D30.3D41.4D49.4

Patient EducationClinical

Bladder Diseases

The bladder is a hollow organ in your lower abdomen that stores urine. Many conditions can affect your bladder. Some common ones are:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert D41.4 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
236.7 Unc behav neo bladder
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About D41.4Overview

What is the ICD-10 code for neoplasm of uncertain behavior of bladder?

The ICD-10-CM code for neoplasm of uncertain behavior of bladder is D41.4 (sometimes written as D414). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is D41.4 (Neoplasm of uncertain behavior of urinary organs) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report neoplasm of uncertain behavior of bladder on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does D41.4 group to?

When neoplasm of uncertain behavior of bladder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 656, 687, 658, 657, 686, 688, with relative weights from 0.7332 to 3.2782 depending on complications. Higher weights mean higher Medicare reimbursement.

Can D41.4 be reported with a code from D49?

Not as a rule. The Excludes1 note at block D37-D48, which applies to D41.4, lists "neoplasms of unspecified behavior (D49.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of D41.4?

Under the General Equivalence Mappings, neoplasm of uncertain behavior of bladder converts to ICD-9-CM 236.7 (unc behav neo bladder). The mapping is a direct match.