ICD-10-CM 2027
ICD-10 code for bladder dysfunction
From the official ICD-10-CM alphabetic index entry “Dysfunction › bladder”. Page updated September 29, 2026.
About coding bladder dysfunction
The ICD-10-CM code for bladder dysfunction is N31.9 (Neuromuscular dysfunction of bladder, unspecified). The official index lists 8 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on N31.9.
Within N31, choose N31.9 (Neuromuscular dysfunction of bladder, unspecified) only when documentation doesn't support a more specific option: Uninhibited neuropathic bladder, not elsewhere classified (N31.0), reflex neuropathic bladder, not elsewhere classified (N31.1), flaccid neuropathic bladder, not elsewhere classified (N31.2) and other neuromuscular dysfunction of bladder (N31.8).
Use an additional code to identify any associated urinary incontinence (N39.3-N39.4-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific bladder dysfunction codes (official index)
- neurogenic NOS
- neuromuscular NOS N31.9 — Neuromuscular dysfunction of bladder, unspecified
- atonic (motor) (sensory) N31.2 — Flaccid neuropathic bladder, not elsewhere classified
- autonomous N31.2 — Flaccid neuropathic bladder, not elsewhere classified
- flaccid N31.2 — Flaccid neuropathic bladder, not elsewhere classified
- nonreflex N31.2 — Flaccid neuropathic bladder, not elsewhere classified
- reflex N31.1 — Reflex neuropathic bladder, not elsewhere classified
- specified NEC N31.8 — Other neuromuscular dysfunction of bladder
- uninhibited N31.0 — Uninhibited neuropathic bladder, not elsewhere classified
Common questions about bladder dysfunction ICD-10 codes
What is the ICD-10 code for bladder dysfunction?
- N31.9 — Neuromuscular dysfunction of bladder, unspecified. More specific codes apply when the documentation supports them: N31.9, N31.2, N31.2, N31.2 and others below.
What is the ICD-10 code for neuromuscular nos bladder dysfunction?
- N31.9 — Neuromuscular dysfunction of bladder, unspecified.
Is N31.9 billable?
- Yes. N31.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N31.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N31.9 as a principal diagnosis.
Is N31.9 a CC or MCC?
- No. N31.9 is neither a CC nor an MCC under MS-DRG v44.0.