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    v1.0.28
    OpenPayerBilling CodesDiseases of esophagus, stomach and duodenumICD-10-CM k23-disorders-of-esophagus
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    ICD-10-CM Code For Disorders Of Esophagus In Diseases Classified Elsewhere: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group K23 includes esophageal disorders that are manifestations of other diseases, such as esophagitis or motility disturbances due to systemic or specified conditions. These ICD-10-CM diagnosis codes are used to document clinical scenarios where an underlying non-esophageal disease contributes to esophageal pathology, capturing organ involvement and clinical complexity relevant to this group. Accurate coding within the ICD-10-CM K23 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM K23: Disorders Of Esophagus In Diseases Classified Elsewhere Overview

    This group of diagnosis codes represents esophageal disorders that occur as manifestations of systemic or other specified diseases rather than primary esophageal conditions. It targets the esophagus and related swallowing function when affected by an underlying disease process. Accurate coding matters because it ties esophageal findings to the primary disease, supporting clinical context and appropriate reimbursement.

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    When to Use

    Assign a code from this group when clinical documentation identifies an esophageal disorder explicitly attributed to another underlying disease or condition. Use these codes to reflect organ involvement by the primary disease and to convey the relationship between the esophageal finding and the underlying diagnosis.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    K23Disorders of esophagus in diseases classified elsewhere

    DRG Codes

    2 rows

    DRG CodeDescription
    391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC
    392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC

    Typical Clinical Scenarios

    • An adult patient with long-standing connective tissue disease (such as systemic sclerosis) presents for evaluation of progressive dysphagia, weight loss, and reflux symptoms despite proton pump inhibitor therapy. Diagnostic workup including esophageal manometry and barium swallow demonstrates severe esophageal hypomotility related to their systemic disease; a diagnosis from this group is assigned to capture the esophageal disorder occurring as part of the underlying systemic condition. Typical codes: K23
    • An elderly patient with a history of chronic gastroesophageal reflux and documented Barrett-like changes presents with new worsening odynophagia and evidence of mucosal ulceration on endoscopy, with biopsies showing esophagitis secondary to a systemic inflammatory disease. The esophageal inflammation attributed to an underlying systemic or extraesophageal disease is coded from this group to reflect the esophageal manifestation of a disease classified elsewhere. Typical codes: K23
    • A hospitalized patient with advanced chronic pulmonary disease is evaluated for feeding intolerance and recurrent aspiration; imaging and endoscopy show esophageal dysmotility and stasis contributing to aspiration pneumonitis. Because the esophageal disorder is secondary to the patient’s other systemic illness and is complicating care, a code from this group is used to document the esophageal disorder associated with the primary disease. Typical codes: K23

    Related Codes

    K20-ESOPHAGITIS

    ICD-10-CM Code For Esophagitis: Group Overview

    K21-GASTRO-ESOPHAGEAL-REFLUX-DISEASE

    ICD-10-CM Code For Gastro-Esophageal Reflux Disease: Group Overview

    K22-OTHER-DISEASES-OF-ESOPHAGUS

    ICD-10-CM Code For Other Diseases Of Esophagus: Group Overview

    K25-GASTRIC-ULCER

    ICD-10-CM Code For Gastric Ulcer: Group Overview

    K26-DUODENAL-ULCER

    ICD-10-CM Code For Duodenal Ulcer: Group Overview

    K27-PEPTIC-ULCER-SITE-UNSPECIFIED

    ICD-10-CM Code For Peptic Ulcer Site Unspecified: Group Overview

    K28-GASTROJEJUNAL-ULCER

    ICD-10-CM Code For Gastrojejunal Ulcer: Group Overview

    K29-GASTRITIS-AND-DUODENITIS

    ICD-10-CM Code For Gastritis And Duodenitis: Group Overview

    K30-FUNCTIONAL-DYSPEPSIA

    ICD-10-CM Code For Functional Dyspepsia: 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.
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