N32.81: Overactive bladder
N32.81, overactive bladder, is listed as a covered diagnosis in 10 Medicare billing and coding articles that apply to 13 HCPCS Level II codes, including J0585 (Injection, onabotulinumtoxina, 1 unit), J0588 (Injection, incobotulinumtoxin a, 1 unit), J0586 (Injection, abobotulinumtoxina, 5 units). 1 of these codes has a 2026 DMEPOS fee schedule amount; L8678 pays $11.40 to $31.64 depending on the state. The articles come from 7 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with N32.81 as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| J0585 | Injection, onabotulinumtoxina, 1 unit | Special coverage instructions apply | — | 8 |
| J0588 | Injection, incobotulinumtoxin a, 1 unit | Carrier judgment | — | 8 |
| J0586 | Injection, abobotulinumtoxina, 5 units | Carrier judgment | — | 8 |
| J0587 | Injection, rimabotulinumtoxinb, 100 units | Special coverage instructions apply | — | 8 |
| J0589 | Injection, daxibotulinumtoxina-lanm, 1 unit | Carrier judgment | — | 8 |
| L8678 | Electrical stimulator supplies (external) for use with implantable neurostimulator, per month | Carrier judgment | $11.40–$31.64 | 1 |
| A4290 | Sacral nerve stimulation test lead, each | Carrier judgment | — | 1 |
| C1767 | Generator, neurostimulator (implantable), non-rechargeable | Special coverage instructions apply | — | 1 |
| C1778 | Lead, neurostimulator (implantable) | Special coverage instructions apply | — | 1 |
| C1820 | Generator, neurostimulator (implantable), with rechargeable battery and charging system | Special coverage instructions apply | — | 1 |
| C1883 | Adapter/extension, pacing lead or neurostimulator lead (implantable) | Special coverage instructions apply | — | 1 |
| C1897 | Lead, neurostimulator test kit (implantable) | Special coverage instructions apply | — | 1 |
| G0255 | Current perception threshold/sensory nerve conduction test, (snct) per limb, any nerve | Non-covered by Medicare | Not covered | 1 |
Medicare policy articles listing N32.81
- A59332: Billing and Coding: Sacral Nerve Stimulation for the Treatment of Urinary and Fecal Incontinence (Palmetto GBA (MAC - Part A, MAC - Part B); 7 Level II codes). LCD with the same title: L39543
- A57715: Billing and Coding: Botulinum Toxins (First Coast Service Options, Inc. (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L33274, L38809
- A58423: Billing and Coding: Botulinum Toxins (Novitas Solutions, Inc. (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L33274, L38809
- A57185: Billing and Coding: Botulinum Toxin Injections (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A57186: Billing and Coding: Botulinum Toxin Injections (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A59707: Billing and Coding: Botulinum Toxin Injections (Wellpoint Federal (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A59714: Billing and Coding: Botulinum Toxin Injections (Palmetto GBA (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A59726: Billing and Coding: Botulinum Toxins Injections (CGS Administrators, LLC (MAC - Part A, MAC - Part B); 5 Level II codes)
- A59809: Billing and Coding: Botulinum Toxin Injections (WPS Insurance Corporation (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A56619: Billing and Coding: Nerve Conduction Studies and Electromyography (Palmetto GBA (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34594, L34859, L35048, L35081
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Frequently asked questions
Does Medicare cover N32.81 (Overactive bladder)?
Medicare covers items and services, not diagnoses. 10 Medicare billing and coding articles list N32.81 as a covered diagnosis for 13 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 N32.81?
The Level II codes from the policies most specific to this diagnosis are J0585 (Injection, onabotulinumtoxina, 1 unit, 8 articles); J0588 (Injection, incobotulinumtoxin a, 1 unit, 8 articles); J0586 (Injection, abobotulinumtoxina, 5 units, 8 articles); J0587 (Injection, rimabotulinumtoxinb, 100 units, 8 articles); J0589 (Injection, daxibotulinumtoxina-lanm, 1 unit, 8 articles). Code choice depends on the item supplied; check each code's descriptor.
What does Medicare pay for equipment billed with N32.81?
Under the 2026 DMEPOS fee schedule (non-rural state fees): L8678 $11.40 to $31.64. Medicare pays 80% of the allowed amount after the Part B deductible.
Which Medicare policy articles list N32.81?
A59332 (Billing and Coding: Sacral Nerve Stimulation for the Treatment of Urinary and Fecal Incontinence); A57715 (Billing and Coding: Botulinum Toxins); A58423 (Billing and Coding: Botulinum Toxins), and 7 more articles.
What is ICD-10-CM code N32.81?
N32.81 is the ICD-10-CM code for overactive bladder, in category N32 (Other disorders of bladder), chapter 14: Diseases of the genitourinary system.
Next steps
- Run a reimbursement report for a device billed under J0585
- Watch J0585 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for J0585
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 14: Diseases of the genitourinary system · All diagnoses · HCPCS lookup