2026 ICD-10-CM Diagnosis Code C79.11Secondary malignant neoplasm of bladder

ICD-10-CM Codes›C00–D49›C76-C80›C79

ICD-10-CM C79.11
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C79.11 is a billable ICD-10-CM diagnosis code for secondary malignant neoplasm of bladder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 656 through 658, 686 through 688. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Secondary malignancies.

Code Identity

ICD-10-CM Code
C79.11
Billable Status
Yes — Valid for Submission
Code Describes
Secondary malignant neoplasm of bladder
Short Description
Secondary malignant neoplasm of bladder
Same as the full description in the CMS dataset.
Parent Code
C79.1
Secondary malignant neoplasm of bladder and other and unspecified urinary organs

Code Classification

ChapterC00–D49Neoplasms
SectionC76-C80Malignant neoplasms of ill-defined, other secondary and unspecified sites
CategoryC79Secondary malignant neoplasm of other and unspecified sites
This CodeC79.11Secondary malignant neoplasm of bladder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Adenocarcinoma of urinary bladder
  • Malignant neoplasm involving urinary bladder by direct extension from endometrium
  • Malignant neoplasm involving urinary bladder by direct extension from fallopian tube
  • Malignant neoplasm involving urinary bladder by direct extension from ovary
  • Malignant neoplasm involving urinary bladder by direct extension from prostate
  • Malignant neoplasm involving urinary bladder by direct extension from uterine cervix
  • Malignant neoplasm involving urinary bladder by direct extension from uterus
  • Malignant neoplasm involving urinary bladder by direct extension from vagina
  • Malignant neoplasm of anterior wall of urinary bladder
  • Malignant neoplasm of dome of urinary bladder
  • Malignant neoplasm of lateral wall of urinary bladder
  • Malignant neoplasm of neck of urinary bladder
  • Malignant neoplasm of posterior wall of urinary bladder
  • Malignant neoplasm of trigone of urinary bladder
  • Malignant neoplasm of urachus
  • Malignant neoplasm of ureteral orifice
  • Metastatic adenocarcinoma to urinary bladder
  • Metastatic carcinoma to urinary bladder
  • Metastatic malignant neoplasm to anterior wall of urinary bladder
  • Metastatic malignant neoplasm to apex of urinary bladder
  • Metastatic malignant neoplasm to dome of urinary bladder
  • Metastatic malignant neoplasm to lateral wall of urinary bladder
  • Metastatic malignant neoplasm to parietal peritoneum
  • Metastatic malignant neoplasm to posterior wall of urinary bladder
  • Metastatic malignant neoplasm to trigone of urinary bladder
  • Metastatic malignant neoplasm to urachus
  • Metastatic malignant neoplasm to ureter
  • Metastatic malignant neoplasm to ureteric orifice of urinary bladder
  • Metastatic malignant neoplasm to urinary bladder
  • Metastatic malignant neoplasm to urinary bladder neck
  • Metastatic transitional cell carcinoma to urinary bladder
  • 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 posterior wall of urinary bladder
  • Neoplasm of trigone of urinary bladder
  • Neoplasm of urachus
  • Neoplasm of ureteric orifice of urinary bladder
  • Neoplasm of urinary bladder neck

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 2 Excludes

  • lymph node metastases C77.0

Clinical ClassificationClinical

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

CCSR NEO070
Secondary malignancies
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • 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.

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 Cancer

The bladder is a hollow organ in your lower abdomen that stores urine. Bladder cancer occurs in the lining of the bladder. It is the sixth most common type of cancer in the United States.

Read the full article at MedlinePlus

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

Convert C79.11 to ICD-9-CMHistory

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

ICD-9-CM
198.1 Sec malig neo urin NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C79.11Overview

Is C79.11 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report secondary malignant neoplasm of bladder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does C79.11 group to?

When secondary malignant neoplasm of bladder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 656, 657, 658, 686, 687, 688, with relative weights from 0.7903 to 3.1838 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of C79.11?

Under the General Equivalence Mappings, secondary malignant neoplasm of bladder converts to ICD-9-CM 198.1 (sec malig neo urin NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.