HCPCS Level II · Outpatient PPS (temporary codes)
C1821Interspinous process distraction device (implantable)
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Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About C1821
C1821 is an HCPCS Level II code in the C series (outpatient PPS (temporary codes)), describing interspinous process distraction device (implantable).
It was added to HCPCS effective 01/01/2007.
Its Medicare coverage code is "D", meaning special Medicare coverage instructions apply.
Details
- Short description
- Interspinous implant
- Date added
- 01/01/2007
- Action effective
- 01/01/2007
- BETOS
- D1A
Related C18xx codes
- C1813Prosthesis, penile, inflatable
- C1814Retinal tamponade device, silicone oil
- C1815Prosthesis, urinary sphincter (implantable)
- C1816Receiver and/or transmitter, neurostimulator (implantable)
- C1817Septal defect implant system, intracardiac
- C1818Integrated keratoprosthesis
- C1819Surgical tissue localization and excision device (implantable)
- C1820Generator, neurostimulator (implantable), with rechargeable battery and charging system
- C1822Generator, neurostimulator (implantable), high frequency, with rechargeable battery and charging system
- C1823Generator, neurostimulator (implantable), non-rechargeable, with transvenous sensing and stimulation leads
- C1824Generator, cardiac contractility modulation (implantable)
- C1825Generator, neurostimulator (implantable), non-rechargeable with carotid sinus baroreceptor stimulation lead(s)
Common questions about C1821
Is HCPCS C1821 still valid?
- Yes. C1821 is active in the CMS October 2026 HCPCS file.
Does Medicare cover C1821?
- Its coverage code is "D": special Medicare coverage instructions apply. Check the local coverage determination for your region.