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    v1.0.28
    OpenPayerBilling CodesOther diseases of the urinary systemICD-10-CM n31-neuromuscular-dysfunction-of-bladder
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    ICD-10-CM Code For Neuromuscular Dysfunction Of Bladder: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group N31 includes disorders of bladder function due to neuromuscular causes not classified elsewhere, such as neurogenic bladder with retention or flaccid and spastic forms. These ICD-10-CM diagnosis codes are used to document clinical situations involving impaired bladder emptying or storage related to neurologic disease or injury, capturing disease severity and functional impact. Accurate coding within the ICD-10-CM N31 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM N31: Neuromuscular Dysfunction Of Bladder, Not Elsewhere Classified Overview

    The ICD-10-CM N31 code group represents neuromuscular dysfunctions of the bladder that are not classified elsewhere, including conditions arising from neurologic injury or dysfunction that impair bladder emptying or storage. These diagnoses target the lower urinary tract and neurogenic control of bladder function. Accurate coding is important for clinical communication and supports appropriate reimbursement by reflecting the complexity of care.

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    When to Use

    Use codes from this group when bladder dysfunction is attributable to neuromuscular or neurologic causes and cannot be classified under a more specific code elsewhere. These codes apply when clinical documentation indicates neurogenic impairment of bladder storage or emptying, such as retention or incontinence related to neurologic disease or injury.

    ICD-10-CM Codes

    5 rows

    ICD-10-CM CodeDescription
    N31.0Uninhibited neuropathic bladder, not elsewhere classified
    N31.1Reflex neuropathic bladder, not elsewhere classified
    N31.2Flaccid neuropathic bladder, not elsewhere classified
    N31.8Other neuromuscular dysfunction of bladder
    N31.9Neuromuscular dysfunction of bladder, unspecified

    DRG Codes

    5 rows

    DRG CodeDescription
    698Other Kidney and Urinary Tract Diagnoses with MCC
    699Other Kidney and Urinary Tract Diagnoses with CC
    700Other Kidney and Urinary Tract Diagnoses without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • A middle-aged woman with a history of multiple sclerosis presents to neurology clinic complaining of progressive urinary retention, decreased bladder sensation, and reliance on intermittent self-catheterization. Evaluation shows detrusor areflexia with overflow incontinence on urodynamic testing, and no evidence of acute infection; a neuromuscular bladder dysfunction code is assigned to document chronic neurologic bladder emptying failure. Typical codes: N31.1, N31.9
    • An elderly man is brought to the emergency department with acute urinary retention and lower abdominal distention after a recent spinal cord injury from a fall. Imaging and bedside bladder scan demonstrate marked urinary retention due to neurogenic bladder dysfunction requiring urgent catheterization and inpatient monitoring; the acute presentation following spinal trauma prompts assignment of an appropriate neuromuscular bladder dysfunction code. Typical codes: N31.0, N31.2
    • A patient with long-standing diabetes mellitus and recurrent UTIs is seen by urology for chronic incomplete bladder emptying and indwelling catheter management; cystometry shows mixed detrusor hyperreflexia with impaired contractility and persistent incontinence, complicating their chronic care and increasing infection risk. A code from this group is used to capture the chronic neuromuscular bladder disorder as a comorbidity affecting management. Typical codes: N31.8, N31.9

    Related Codes

    N30-CYSTITIS

    ICD-10-CM Code For Cystitis: Group Overview

    N32-OTHER-DISORDERS-OF-BLADDER

    ICD-10-CM Code For Other Disorders Of Bladder: Group Overview

    N33-BLADDER-DISORDERS-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Bladder Disorders In Diseases Classified Elsewhere: Group Overview

    N34-URETHRITIS-AND-URETHRAL-SYNDROME

    ICD-10-CM Code For Urethritis And Urethral Syndrome: Group Overview

    N35-URETHRAL-STRICTURE

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

    N36-OTHER-DISORDERS-OF-URETHRA

    ICD-10-CM Code For Other Disorders Of Urethra: Group Overview

    N37-URETHRAL-DISORDERS-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Urethral Disorders In Diseases Classified Elsewhere: Group Overview

    N39-OTHER-DISORDERS-OF-URINARY-SYSTEM

    ICD-10-CM Code For Other Disorders Of Urinary 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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