N31.2 Flaccid neuropathic bladder, not elsewhere classified
The ICD-10-CM code for Flaccid neuropathic bladder, not elsewhere classified is N31.2 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- N30-N39: Other diseases of the urinary system (N30-N39)
- Category N31
- 6 codes (5 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to N31.2:
- Cystoplegia
- Inertia › vesical (neurogenic)
- Atonia, atony, atonic › bladder (sphincter) (neurogenic)
- Autonomic, autonomous › bladder (neurogenic)
- Paresis › vesical NEC
- Inertia › bladder (neurogenic)
- Paralysis, paralytic (complete) (incomplete) › bladder (neurogenic) (sphincter)
- Hypotonia, hypotonicity, hypotony › bladder
Inclusion Terms
- Atonic (motor) (sensory) neuropathic bladder
- Autonomous neuropathic bladder
- Nonreflex neuropathic bladder
U.S. Hospital Utilization
- An estimated 10,300 U.S. inpatient stays in 2023 included N31.2 among the documented diagnoses.
- 85 stays listed it as the principal diagnosis.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
CKD staging and code assignment (N18.-)The ICD-10-CM classifies CKD based on severity. The severity of CKD is designated by stages 1-5. Stage 2, code N18.2, equates to mild CKD; stage 3, codes N18.30-N18.32, equate to moderate CKD; and stage 4, code N18.4, equates to severe CKD. Code N18.6, End stage renal disease (ESRD), is assigned when the provider has documented end- stage renal disease (ESRD).
CKD stage plus ESRD: assign N18.6 onlyIf both a stage of CKD and ESRD are documented, assign code N18.6 only.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026