Neuromuscular dysfunction of bladder, not elsewhere classified (N31) ICD-10-CM
The N31 code range covers neuromuscular dysfunction of bladder, not elsewhere classified with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the N31 Range 6 codes · 5 billable
- N31 Neuromuscular dysfunction of bladder, not elsewhere classifiedNon-billable
- 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
- N31.9 Neuromuscular dysfunction of bladder, unspecified
About the N31 Code Range
The N31 ICD-10 code section covers neuromuscular dysfunctions of the bladder that do not fit into other specific categories. These codes are used to identify various types of bladder control problems caused by nerve or muscle issues affecting normal bladder function.
This section includes codes for different forms of neurogenic bladder conditions such as N31.0 for uninhibited neuropathic bladder (also called uninhibited neurogenic urinary bladder), where the bladder contracts uncontrollably; N31.1 for reflex neuropathic bladder characterized by involuntary reflex bladder contractions; and N31.2 which covers flaccid neuropathic bladder, with synonyms like atonic or hypotonic bladder where the muscles fail to contract properly. The code N31.8 is used for other bladder neuromuscular dysfunctions including both spastic and noncompliant bladder types, often linked to abnormal sensations or muscle underactivity. Finally, N31.9 denotes unspecified bladder neuromuscular dysfunctions and encompasses a broad range of conditions, including neurogenic bladder related to spinal cord injuries, poliomyelitis, or cerebrovascular accidents. Understanding these distinctions helps medical coders select the correct ICD-10 code for neuromuscular bladder dysfunction based on patient symptoms and clinical findings.
Questions About This Page
How many billable codes are in the N31 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the N31 range classify?
The range classifies neuromuscular dysfunction of bladder, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
