ICD-10-CM 2027
ICD-10 code for bladder atonia
From the official ICD-10-CM alphabetic index entry “Atonia, atony, atonic › bladder (sphincter) (neurogenic)”. Page updated September 29, 2026.
About coding bladder atonia
The ICD-10-CM code for bladder atonia is N31.2 (Flaccid neuropathic bladder, not elsewhere classified).
Within N31 (neuromuscular dysfunction of bladder, not elsewhere classified), N31.2 is specifically for flaccid neuropathic bladder, not elsewhere classified. Related codes cover Uninhibited neuropathic bladder, not elsewhere classified (N31.0), reflex neuropathic bladder, not elsewhere classified (N31.1), other neuromuscular dysfunction of bladder (N31.8) and neuromuscular dysfunction of bladder, unspecified (N31.9).
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.
Common questions about bladder atonia ICD-10 codes
What is the ICD-10 code for bladder atonia?
- N31.2 — Flaccid neuropathic bladder, not elsewhere classified.
Is N31.2 billable?
- Yes. N31.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N31.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N31.2 as a principal diagnosis.
Is N31.2 a CC or MCC?
- No. N31.2 is neither a CC nor an MCC under MS-DRG v44.0.