2026 ICD-10-CM Diagnosis Code C67.7Malignant neoplasm of urachus

ICD-10-CM Codes›C00–D49›C64-C68›C67

ICD-10-CM C67.7
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C67.7 is a billable ICD-10-CM diagnosis code for malignant neoplasm of urachus. 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. Coders also document this condition as carcinoma of peritoneum. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Urinary system cancers - bladder.

Code Identity

ICD-10-CM Code
C67.7
Billable Status
Yes — Valid for Submission
Code Describes
Malignant neoplasm of urachus
Short Description
Malignant neoplasm of urachus
Same as the full description in the CMS dataset.
Parent Code
C67
Malignant neoplasm of bladder

Code Classification

ChapterC00–D49Neoplasms
SectionC64-C68Malignant neoplasms of urinary tract
CategoryC67Malignant neoplasm of bladder
This CodeC67.7Malignant neoplasm of urachus

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Carcinoma of peritoneum
  • Malignant neoplasm of urachus
  • Neoplasm of urachus
  • Primary adenocarcinoma of peritoneum
  • Primary adenocarcinoma of urachus
  • Primary malignant neoplasm of parietal peritoneum
  • Primary malignant neoplasm of urachus

Clinical ClassificationClinical

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

CCSR NEO043
Urinary system cancers - bladder
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) › urachusC67.7C79.11D09.0D30.3D41.4D49.4
urachusC67.7C79.11D09.0D30.3D41.4D49.4

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 C67.7 to ICD-9-CMHistory

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

ICD-9-CM
188.7 Malig neo urachus
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C67.7Overview

Is C67.7 (Malignant neoplasm of bladder) a billable code?

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

What MS-DRG does C67.7 group to?

When malignant neoplasm of urachus 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 C67.7?

Under the General Equivalence Mappings, malignant neoplasm of urachus converts to ICD-9-CM 188.7 (malig neo urachus). The mapping is a direct match.

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.