N31.8 – Other neuromuscular dysfunction of bladder

ICD-10-CM 2027 diagnosis code · Other diseases of the urinary system

Billable code

ICD-10-CM code N31.8

Code: N31.8 (claims format: N318)
Description: Other neuromuscular dysfunction of bladder
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 14. Diseases of the genitourinary system (N00-N99)
Block: N30-N39 Other diseases of the urinary system
Parent codes: N31

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

N31 – Neuromuscular dysfunction of bladder, not elsewhere classified

Excludes1 (not coded here):

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-)

Block N30-N39

Excludes2 (not included here):

urinary infection (complicating):
abortion or ectopic or molar pregnancy (O00-O07, O08.8)
pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)

Index terms for N31.8

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in N31

Frequently asked questions

What is ICD-10 code N31.8?

N31.8 is the ICD-10-CM code for other neuromuscular dysfunction of bladder, in the block N30-N39 (Other diseases of the urinary system).

Is N31.8 a billable code?

Yes. N31.8 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does N31.8 belong to?

It belongs to category N31 – Neuromuscular dysfunction of bladder, not elsewhere classified.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.