2026 ICD-10-CM Diagnosis Code N31Neuromuscular dysfunction of bladder, not elsewhere classified

ICD-10-CM Codes›N00–N99›N30-N39›N31

ICD-10-CM N31
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N31 is a non-billable ICD-10-CM category code for neuromuscular dysfunction of bladder, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as N31.0, N31.1, N31.2, and N31.8.

Code Identity

ICD-10-CM Code
N31
Billable Status
No — Non-Billable Category
Code Describes
Neuromuscular dysfunction of bladder, not elsewhere classified
Short Description
Neuromuscular dysfunction of bladder, NEC
Chapter
N30-N39
Other diseases of the urinary system

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN30-N39Other diseases of the urinary system
CategoryN31Neuromuscular dysfunction of bladder, not elsewhere classified
This CodeN31Neuromuscular dysfunction of bladder, not elsewhere classified

Specific Coding for Neuromuscular dysfunction of bladder, NECOverview

Non-specific codes like N31 require more characters. Use one of these billable codes instead:

  • Use N31.0 for Uninhibited neuropathic bladder, not elsewhere classified

  • Use N31.1 for Reflex neuropathic bladder, not elsewhere classified

  • Use N31.2 for Flaccid neuropathic bladder, not elsewhere classified

  • Use N31.8 for Other neuromuscular dysfunction of bladder

  • Use N31.9 for Neuromuscular dysfunction of bladder, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

  • code to identify any associated urinary incontinence N39.3 N39.4

Type 1 Excludes

  • cord bladder NOS G95.89
  • neurogenic bladder due to cauda equina syndrome G83.4
  • neuromuscular dysfunction due to spinal cord lesion G95.89

Patient EducationClinical

Bladder Diseases

The bladder is a hollow organ in your lower abdomen that stores urine. Many conditions can affect your bladder. Some common ones are:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N31Overview

Is N31 a billable code?

No. This is a category header that groups the codes for neuromuscular dysfunction of bladder, not elsewhere classified, and headers cannot be submitted on claims. Claims for neuromuscular dysfunction of bladder, not elsewhere classified need a more specific code from this category, such as N31.0, N31.1, and N31.2.