N31
⚠ Non-billable
Neuromuscular dysfunction of bladder, not elsewhere classified
ICD-10-CM · FY2026 · Diseases of the Genitourinary System
Code
N31
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Genitourinary System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never code together
- cord bladder NOS (G95.89)
- neurogenic bladder due to cauda equina syndrome (G83.4)
- neuromuscular dysfunction due to spinal cord lesion (G95.89)
Use additional code
- code to identify any associated urinary incontinence (N39.3-N39.4-)
Frequently asked questions
What is ICD-10 code N31?
ICD-10-CM code N31 represents Neuromuscular dysfunction of bladder, not elsewhere classified. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N31 billable?
No. N31 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is N31 in?
N31 belongs to the Diseases of the Genitourinary System chapter (N00–N99) of ICD-10-CM.
Related codes in the N31 category
N31.0
Uninhibited neuropathic bladder, not elsewhere classified
Billable
N31.1
Reflex neuropathic bladder, not elsewhere classified
Billable
N31.2
Flaccid neuropathic bladder, not elsewhere classified
Billable
N31.8
Other neuromuscular dysfunction of bladder
Billable
N31.9
Neuromuscular dysfunction of bladder, unspecified
Billable
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