C1731 HCPCS code: Catheter, electrophysiology, diagnostic, other than 3d mapping (20 or more electrodes)
C1731 is the HCPCS Level II code for catheter, electrophysiology, diagnostic, other than 3d mapping (20 or more electrodes). Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 2 per day on outpatient hospital claims.
Code details
| Field | Value |
|---|---|
| Section | C codes — Outpatient PPS (hospital outpatient temporary codes) |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 53 |
| BETOS category | D1A — Medical/surgical supplies |
| Added | 2001-04-01 |
| Last action effective | 2004-01-01 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 2 | Clinical: Data |
| practitioner claims | 2 | Clinical: CMS Workgroup |
What changed for C1731
- 2001-04-01: C1731 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code C1731?
C1731 is the HCPCS Level II code for catheter, electrophysiology, diagnostic, other than 3d mapping (20 or more electrodes). Short descriptor: "Cath, ep, 20 or more elec".
Does Medicare cover C1731?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
How many units of C1731 can be billed per day?
2 on outpatient hospital claims; 2 on practitioner claims (NCCI medically unlikely edits).
Related C17 codes
- C1713 — Anchor/screw for opposing bone-to-bone or soft tissue-to-bone (implantable)
- C1714 — Catheter, transluminal atherectomy, directional
- C1715 — Brachytherapy needle
- C1716 — Brachytherapy source, non-stranded, gold-198, per source
- C1717 — Brachytherapy source, non-stranded, high dose rate iridium-192, per source
- C1719 — Brachytherapy source, non-stranded, non-high dose rate iridium-192, per source
- C1721 — Cardioverter-defibrillator, dual chamber (implantable)
- C1722 — Cardioverter-defibrillator, single chamber (implantable)
- C1724 — Catheter, transluminal atherectomy, rotational
- C1725 — Catheter, transluminal angioplasty, non-laser (may include guidance, infusion/perfusion capability)
- C1726 — Catheter, balloon dilatation, non-vascular
- C1727 — Catheter, balloon tissue dissector, non-vascular (insertable)
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Next steps
- Run a reimbursement report for a device billed under C1731
- Watch C1731 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for C1731
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.