Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.28
    OpenPayerBilling CodesMalignant neoplasms of digestive organsICD-10-CM c23-malignant-neoplasm-of-gallbladder
    Ask Trek AI about this page

    ICD-10-CM Code For Malignant Neoplasm Of Gallbladder: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group C23 includes malignant neoplasms of the gallbladder, covering primary gallbladder cancers and tumors arising from gallbladder tissue. These ICD-10-CM diagnosis codes are used to document confirmed malignant gallbladder disease, including staging-related details, tumor behavior, and extension into adjacent structures. Accurate coding within the ICD-10-CM C23 group supports proper claim adjudication / complete clinical documentation / appropriate reimbursement.

    Customize your policy alerts

    Sign up for ICD-10-CM Code For Malignant Neoplasm Of Gallbladder: Group Overview policy alerts

    Get alerted when relevant policies change without checking for updates manually.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    ICD-10-CM C23: Malignant Neoplasm Of Gallbladder Overview

    The ICD-10-CM C23 group represents malignant tumors originating in the gallbladder, a component of the biliary system. These diagnoses target neoplastic disease affecting the gallbladder and surrounding biliary structures. Accurate coding is important for complete clinical documentation and supports appropriate reimbursement for oncology and surgical services.

    Table of contents

    Progress1 / 6

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    When to Use

    Use a code from this group when a patient has a documented primary malignant neoplasm of the gallbladder confirmed by pathology or clear clinical evidence. Codes from this group are applied when coding treatment, hospital stays, or follow-up visits related to gallbladder cancer.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    C23Malignant neoplasm of gallbladder

    DRG Codes

    3 rows

    DRG CodeDescription
    435Malignancy of Hepatobiliary System or Pancreas with MCC
    436Malignancy of Hepatobiliary System or Pancreas with CC
    437Malignancy of Hepatobiliary System or Pancreas without CC/MCC

    Typical Clinical Scenarios

    • An elderly patient presents to the emergency department with progressive right upper quadrant pain, jaundice, and unintentional weight loss over several weeks; imaging (ultrasound/CT) reveals a mass in the gallbladder fossa with biliary obstruction and suspicious liver lesions, prompting referral to oncology for staging and management. A definitive diagnosis is made based on radiologic and pathologic findings, so a malignant gallbladder neoplasm code is assigned. Typical codes: C23
    • A middle-aged patient with a history of chronic cholelithiasis and recurrent biliary colic undergoes elective cholecystectomy; pathologic examination of the gallbladder specimen unexpectedly demonstrates invasive carcinoma confined to the gallbladder wall, leading to postoperative oncologic follow-up and staging workup. Because pathology confirms malignancy of the gallbladder, a code from this group is reported. Typical codes: C23
    • A patient is admitted with acute cholangitis and sepsis, and during evaluation is found to have an advanced gallbladder mass eroding into adjacent hepatic tissue with associated hepatic metastases; the gallbladder cancer is documented as a significant comorbidity contributing to the current acute illness and management complexity. The malignancy of the gallbladder is coded alongside the acute infectious diagnoses. Typical codes: C23

    Related Codes

    C15-MALIGNANT-NEOPLASM-OF-ESOPHAGUS

    ICD-10-CM Code For Malignant Neoplasm Of Esophagus: Group Overview

    C16-MALIGNANT-NEOPLASM-OF-STOMACH

    ICD-10-CM Code For Malignant Neoplasm Of Stomach: Group Overview

    C17-MALIGNANT-NEOPLASM-OF-SMALL-INTESTINE

    ICD-10-CM Code For Malignant Neoplasm Of Small Intestine: Group Overview

    C18-MALIGNANT-NEOPLASM-OF-COLON

    ICD-10-CM Code For Malignant Neoplasm Of Colon: Group Overview

    C19-MALIGNANT-NEOPLASM-OF-RECTOSIGMOID-JUNCTION

    ICD-10-CM Code For Malignant Neoplasm Of Rectosigmoid Junction: Group Overview

    C20-MALIGNANT-NEOPLASM-OF-RECTUM

    ICD-10-CM Code For Malignant Neoplasm Of Rectum: Group Overview

    C21-MALIGNANT-NEOPLASM-OF-ANUS-AND-ANAL-CANAL

    ICD-10-CM Code For Malignant Neoplasm Of Anus And Anal Canal: Group Overview

    C22-MALIGNANT-NEOPLASM-OF-LIVER

    ICD-10-CM Code For Malignant Neoplasm Of Liver And Intrahepatic Bile Ducts: Group Overview

    C24-MALIGNANT-NEOPLASM-BILIARY-TRACT

    ICD-10-CM Code For Malignant Neoplasm Of Other And Unspecified Parts Of Biliary Tract: Group Overview

    C26-MALIGNANT-NEOPLASM-OTHER-ILL-DEFINED-DIGESTIVE-ORGANS

    ICD-10-CM Code For Malignant Neoplasm Of Other And Ill-Defined Digestive Organs: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
    Published by

    Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.