C9771 — Nasal/sinus endoscopy, cryoablation nasal tissue(s) and/or nerve(s), unilateral or bilateral
C9771 is a HCPCS Level II code for nasal/sinus endoscopy, cryoablation nasal tissue(s) and/or nerve(s), unilateral or bilateral. It belongs to the Outpatient Prospective Payment System section. It was terminated on December 31, 2023 and is not valid on new claims.
This code has been terminated
CMS terminated C9771 on December 31, 2023. It stays in the file as history — a claim you are auditing from before that date may legitimately carry it — but it must not appear on a new claim. The adjacent codes below are the usual place to look for its replacement.
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 C9771
- Long descriptor
- Nasal/sinus endoscopy, cryoablation nasal tissue(s) and/or nerve(s), unilateral or bilateral
- Short descriptor
- Nsl/sins cryo post nasal tis
- Added
- January 1, 2021
- Terminated
- December 31, 2023
- BETOS
- P5E
- 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.
When CMS retired it.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Statute.
Codes adjacent to C9771
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If C9771 is not quite right, the correct code is very often within a few positions of it.
- C9763Cardiac magnetic resonance imaging for morphology and function, quantification of segmental dysfunction; with stress imaging
- C9764Revascularization, endovascular, open or percutaneous, lower extremity artery(ies), except tibial/peroneal; with intravascular lithotripsy, includes angioplasty within the same vessel(s), when performed
- C9765Revascularization, endovascular, open or percutaneous, lower extremity artery(ies), except tibial/peroneal; with intravascular lithotripsy, and transluminal stent placement(s), includes angioplasty within the same vessel(s), when performed
- C9766Revascularization, endovascular, open or percutaneous, lower extremity artery(ies), except tibial/peroneal; with intravascular lithotripsy and atherectomy, includes angioplasty within the same vessel(s), when performed
- C9767Revascularization, endovascular, open or percutaneous, lower extremity artery(ies), except tibial/peroneal; with intravascular lithotripsy and transluminal stent placement(s), and atherectomy, includes angioplasty within the same vessel(s), when performed
- C9768Endoscopic ultrasound-guided direct measurement of hepatic portosystemic pressure gradient by any method (list separately in addition to code for primary procedure)
- C9769Cystourethroscopy, with insertion of temporary prostatic implant/stent with fixation/anchor and incisional strutsterminated
- C9770Vitrectomy, mechanical, pars plana approach, with subretinal injection of pharmacologic/biologic agentterminated
- C9772Revascularization, endovascular, open or percutaneous, tibial/peroneal artery(ies), with intravascular lithotripsy, includes angioplasty within the same vessel (s), when performed
- C9773Revascularization, endovascular, open or percutaneous, tibial/peroneal artery(ies); with intravascular lithotripsy, and transluminal stent placement(s), includes angioplasty within the same vessel(s), when performed
- C9774Revascularization, endovascular, open or percutaneous, tibial/peroneal artery(ies); with intravascular lithotripsy and atherectomy, includes angioplasty within the same vessel (s), when performed
- C9775Revascularization, endovascular, open or percutaneous, tibial/peroneal artery(ies); with intravascular lithotripsy and transluminal stent placement(s), and atherectomy, includes angioplasty within the same vessel (s), when performed
- C9776Intraoperative near-infrared fluorescence imaging of major extra-hepatic bile duct(s) (e.g., cystic duct, common bile duct and common hepatic duct) with intravenous administration of indocyanine green (icg) (list separately in addition to code for primary procedure)
- C9777Esophageal mucosal integrity testing by electrical impedance, transoral, includes esophagoscopy or esophagogastroduodenoscopy
- C9778Colpopexy, vaginal; minimally invasive extra-peritoneal approach (sacrospinous)
- C9779Endoscopic submucosal dissection (esd), including endoscopy or colonoscopy, mucosal closure, when performed
Questions about C9771
What is HCPCS code C9771?
C9771 is a HCPCS Level II code for nasal/sinus endoscopy, cryoablation nasal tissue(s) and/or nerve(s), unilateral or bilateral. It sits in the Outpatient Prospective Payment System section.
Does Medicare cover C9771?
The CMS HCPCS file marks C9771 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.
Is C9771 still valid?
No. C9771 was terminated on December 31, 2023 and should not be used on new claims.