N31.9
BillableNeuromuscular dysfunction of bladder, unspecified
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is N31.9 an HCC code?
No. N31.9 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
N31.9 is the ICD-10-CM diagnosis code for neuromuscular dysfunction of bladder, unspecified. Bladder dysfunction caused by nerve or muscle problems when the specific type is not documented or identified. N31.9 sits in the ICD-10-CM chapter for diseases of the genitourinary system (n00-n99), within the section covering other diseases of the urinary system (n30-n39).
N31.9 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
This is a catch-all code; attempt to obtain more specific documentation from the provider before using this code.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for N31.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is a catch-all code; attempt to obtain more specific documentation from the provider before using this code
- •Query the physician if the type of neuromuscular dysfunction can be determined