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    v1.0.28
    OpenPayerBilling CodesSymptoms and signs involving the genitourinary systemICD-10-CM r31-hematuria
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    ICD-10-CM Code For Hematuria: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group R31 includes diagnoses for hematuria, covering gross and microscopic blood in the urine and related unspecified hematuria codes. These ICD-10-CM diagnosis codes are used to document clinical presentations of blood in the urine, capturing whether hemorrhage is visible, microscopic, or unspecified and aiding in identification of potential underlying urinary tract conditions. Accurate coding within the ICD-10-CM R31 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM R31: Hematuria Overview

    The ICD-10-CM R31 group covers hematuria, the presence of blood in the urine, which can be gross or microscopic and arise from multiple levels of the urinary tract. These diagnoses target the genitourinary system and signal underlying causes ranging from infection and stones to malignancy and trauma. Accurate coding matters for correct clinical documentation, appropriate claim processing, and supporting diagnostic workups.

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    When to Use

    Use a code from this group when clinical documentation indicates visible blood in the urine, microscopic blood on urinalysis, or an unspecified hematuria presentation. These codes are appropriate when hematuria is the documented clinical finding being reported, even if the underlying cause is pending further evaluation.

    ICD-10-CM Codes

    5 rows

    ICD-10-CM CodeDescription
    R31.0Gross hematuria
    R31.1Benign essential microscopic hematuria
    R31.21Asymptomatic microscopic hematuria
    R31.29Other microscopic hematuria
    R31.9Hematuria, unspecified

    DRG Codes

    4 rows

    DRG CodeDescription
    695Kidney and Urinary Tract Signs and Symptoms with MCC
    696Kidney and Urinary Tract Signs and Symptoms without MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • An elderly male presents to the emergency department with sudden onset of painless gross blood in the urine noticed while voiding. He has a history of smoking and reports no recent trauma or anticoagulant changes; urinalysis confirms visible hematuria and the team orders urgent imaging and cystoscopy to evaluate for malignancy. A diagnosis from this group is assigned to describe the presenting symptom of gross blood in the urine pending definitive etiology. Typical codes: R31.0
    • A middle-aged woman with a known history of recurrent urinary tract infections and microscopic hematuria on routine urinalysis during her annual urology follow-up. She is asymptomatic at the visit but repeat urine microscopy shows persistent RBCs without visible blood, prompting further surveillance and possible referral for nephrologic evaluation. A code from this group is used to document the persistent microscopic hematuria finding as part of chronic evaluation. Typical codes: R31.1, R31.21
    • A hospitalized patient on therapeutic anticoagulation after a pulmonary embolism develops new-onset red-tinged urine and a drop in hemoglobin; there is concern for bleeding related to anticoagulant therapy and potential urinary tract source. The hematuria finding is documented to capture the complication and guide medication management and diagnostic workup. Typical codes: R31.29, R31.9

    Related Codes

    R30-PAIN-ASSOCIATED-WITH-MICTURITION

    ICD-10-CM Code For Pain Associated With Micturition: Group Overview

    R32-UNSPECIFIED-URINARY-INCONTINENCE

    ICD-10-CM Code For Unspecified Urinary Incontinence: Group Overview

    R33-RETENTION-OF-URINE

    ICD-10-CM Code For Retention Of Urine: Group Overview

    R34-ANURIA-AND-OLIGURIA

    ICD-10-CM Code For Anuria And Oliguria: Group Overview

    R35-POLYURIA

    ICD-10-CM Code For Polyuria: Group Overview

    R36-URETHRAL-DISCHARGE

    ICD-10-CM Code For Urethral Discharge: Group Overview

    R37-SEXUAL-DYSFUNCTION-UNSPECIFIED

    ICD-10-CM Code For Sexual Dysfunction Unspecified: Group Overview

    R39-OTHER-AND-UNSPECIFIED-GENITOURINARY-SYMPTOMS

    ICD-10-CM Code For Other And Unspecified Symptoms And Signs Involving The Genitourinary System: 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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