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    v1.0.28
    OpenPayerBilling CodesSymptoms and signs involving the digestive system and abdomenICD-10-CM r12-heartburn
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    ICD-10-CM Code For Heartburn: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group R12 includes diagnoses for heartburn and related symptoms such as acid regurgitation and retrosternal burning that reflect gastroesophageal reflux processes. These ICD-10-CM diagnosis codes are used to document symptomatic presentations of reflux-related irritation, severity of symptoms, and frequency or chronicity when clinically described. Accurate coding within the ICD-10-CM R12 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM R12: Heartburn Overview

    The ICD-10-CM R12 group represents heartburn and related symptoms of gastroesophageal reflux affecting the digestive system. These diagnoses target symptomatic acid regurgitation and retrosternal burning sensation associated with the esophagus and upper gastrointestinal tract. Accurate coding matters for reimbursement because it links clinical documentation to claims and supports appropriate payment and quality reporting.

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    When to Use

    Use a code from this group when the clinical record documents symptomatic heartburn or acid regurgitation as the primary reason for the encounter. These codes apply when symptoms are described clinically but a more specific diagnostic code for anatomic pathology is not documented.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    R12Heartburn

    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

    • A middle-aged patient presents to urgent care with a sudden onset of burning chest sensation after a large meal and use of NSAIDs; symptoms are intermittent over the past 24 hours without dysphagia or hematemesis, and vital signs are stable. The clinician documents the symptom of epigastric burning consistent with heartburn as the primary complaint and assigns a symptom code rather than a definitive esophageal disease. Typical codes: R12
    • An adult with known gastroesophageal reflux disease reports chronic daily retrosternal burning despite lifestyle measures, seeking primary care follow-up for symptom management and medication adjustment; there is no alarm feature such as weight loss or GI bleeding. Because the visit documents ongoing heartburn as the active problem driving care, the encounter is coded to reflect the symptom. Typical codes: R12
    • An elderly patient is admitted for evaluation of chest pain; cardiac causes are excluded and the team attributes the pain to reflux-related burning after review of medications and recent meals. Since the esophageal burning is documented as the cause of the current non-cardiac chest symptoms, a symptom code is used to capture the presenting heartburn. Typical codes: R12

    Related Codes

    R10-ABDOMINAL-AND-PELVIC-PAIN

    ICD-10-CM Code For Abdominal And Pelvic Pain: Group Overview

    R11-NAUSEA-AND-VOMITING

    ICD-10-CM Code For Nausea And Vomiting: Group Overview

    R13-APHAGIA-AND-DYSPHAGIA

    ICD-10-CM Code For Aphagia And Dysphagia: Group Overview

    R14-FLATULENCE-AND-RELATED-CONDITIONS

    ICD-10-CM Code For Flatulence And Related Conditions: Group Overview

    R15-FECAL-INCONTINENCE

    ICD-10-CM Code For Fecal Incontinence: Group Overview

    R16-HEPATOMEGALY-AND-SPLENOMEGALY

    ICD-10-CM Code For Hepatomegaly And Splenomegaly Not Elsewhere Classified: Group Overview

    R17-UNSPECIFIED-JAUNDICE

    ICD-10-CM Code For Unspecified Jaundice: Group Overview

    R18-ASCITES

    ICD-10-CM Code For Ascites: Group Overview

    R19-OTHER-SYMPTOMS-AND-SIGNS-DIGESTIVE-SYSTEM

    ICD-10-CM Code For Other Symptoms And Signs Involving The Digestive System And Abdomen: 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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