N31.8 Other neuromuscular dysfunction of bladder

Billable ICD-10-CM code, FY2026.

Applies from N31 Neuromuscular dysfunction of bladder, not elsewhere classified

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-)

MS-DRG index

Defines the logic of DRG(s) 698-700 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 596.52 Low bladder compliance (approximate)

Code annotations containing back-references to N31.8

Back-references to N31

• Type 1 Excludes: G95.8 Other specified diseases of spinal cord ("neuromuscular dysfunction of bladder without spinal cord lesion (N31.-)")
• Type 1 Excludes: N33 Bladder disorders in diseases classified elsewhere ("cystitis in neurogenic bladder (N31.-)")

Diagnosis Index entries for N31.8

• Atrophy, atrophic (of) › bladder › neurogenic
• Dysfunction › bladder › neuromuscular NOS › specified NEC
• Hypertony, hypertonia, hypertonicity › bladder

Nearby codes

• N31 Neuromuscular dysfunction of bladder, not elsewhere classified
• N31.0 Uninhibited neuropathic bladder, not elsewhere classified
• N31.1 Reflex neuropathic bladder, not elsewhere classified
• N31.2 Flaccid neuropathic bladder, not elsewhere classified
• N31.8 Other neuromuscular dysfunction of bladder (this code)
• N31.9 Neuromuscular dysfunction of bladder, unspecified