2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N31: its own notes plus those printed at block N30-N39 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

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

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block N30-N39 Other diseases of the urinary system applies to 85 codes
  • urinary infection (complicating):
  • abortion or ectopic or molar pregnancy (O00-O07, O08.8)
  • pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)
From Chapter 14 (N00-N99) Diseases of the genitourinary system applies to 838 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

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

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name N31, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming N31: they are not reported together with it, unless the two conditions are unrelated.

  • G95.8 Other specified diseases of spinal cord
    neuromuscular dysfunction of bladder without spinal cord lesion (N31.-)
  • N33 Bladder disorders in diseases classified elsewhere
    cystitis in neurogenic bladder (N31.-)

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N31Overview

What is the ICD-10 code for neuromuscular dysfunction of bladder, not elsewhere classified?

N31 is the ICD-10-CM category for neuromuscular dysfunction of bladder, not elsewhere classified, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can N31 be reported with G95.89?

Not as a rule. The Excludes1 note on N31 lists "cord bladder NOS (G95.89)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

Does N31 need an additional code?

When the condition applies, yes. The Use Additional Code note reads: code to identify any associated urinary incontinence (N39.3-N39.4-). The additional code is reported after N31.