C1831 — Interbody cage, anterior, lateral or posterior, personalized (implantable)
C1831 is a HCPCS Level II code for interbody cage, anterior, lateral or posterior, personalized (implantable). It belongs to the Outpatient Prospective Payment System section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Special coverage instructions apply
There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
The CMS record for C1831
- Long descriptor
- Interbody cage, anterior, lateral or posterior, personalized (implantable)
- Short descriptor
- Personalized interbody cage
- Added
- October 1, 2021
- BETOS
- D1A
- Pricing indicator
- 53 — Other
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Statute.
Codes adjacent to C1831
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If C1831 is not quite right, the correct code is very often within a few positions of it.
- C1821Interspinous process distraction device (implantable)
- 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)
- C1826Generator, neurostimulator (implantable), includes closed feedback loop leads and all implantable components, with rechargeable battery and charging system
- C1827Generator, neurostimulator (implantable), non-rechargeable, with implantable stimulation lead and external paired stimulation controller
- C1830Powered bone marrow biopsy needle
- C1832Autograft suspension, including cell processing and application, and all system components
- C1833Monitor, cardiac, including intracardiac lead and all system components (implantable)
- C1834Pressure sensor system, includes all components (e.g., introducer, sensor), intramuscular (implantable), excludes mobile (wireless) software applicationterminated
- C1839Iris prosthesis
- C1840Lens, intraocular (telescopic)
- C1841Retinal prosthesis, includes all internal and external componentsterminated
- C1842Retinal prosthesis, includes all internal and external components; add-on to c1841terminated
- C1849Skin substitute, synthetic, resorbable, per square centimeterterminated
Questions about C1831
What is HCPCS code C1831?
C1831 is a HCPCS Level II code for interbody cage, anterior, lateral or posterior, personalized (implantable). It sits in the Outpatient Prospective Payment System section.
Does Medicare cover C1831?
The CMS HCPCS file marks C1831 as "Special coverage instructions apply". There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.