Open surgical repair of a nasal septal fracture, accessing the septum through a nasal incision to realign displaced cartilage and bone, with or without internal stabilization.

Verified May 8, 2026 · 7 sources ↓

Medicare: $583.18
Work RVU: 6.6
Global, days: 90
Region: Other

Drawn from CMSAAPCNIHMdclarityEmedny

Documentation requirements

What must appear in the operative or office note to support the claim.

Source · Editorial brief grounded in 7 cited references ↓

Operative note must specify that a surgical incision was made to access the septum — open treatment requires documented exposure, not just manipulation.
Describe the fracture pattern: which septal components (cartilage, bone, or both) were fractured and displaced.
If stabilization was performed, document the method (e.g., internal splints, through-and-through sutures, external nasal splint tied to internal fixation) and materials used.
Clearly distinguish the indication as acute traumatic septal fracture, not pre-existing deviation — this separates 21336 from 30520 on audit.
Document the approach and anatomical structures addressed; notes that reference only 'standard nasal repair' without specifics are audit targets.
If additional nasal bone fractures were also treated, document each fracture site and treatment method separately to support the correct code selection (21335 vs. 21336).

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 51 Multiple procedures 52 Reduced services 59 Distinct service 76 Repeat, same physician 77 Repeat, another physician 78 Unplanned return — related 79 Unrelated during global 80 Assistant surgeon

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 21336 covers open treatment of a fractured nasal septum — meaning the surgeon makes a surgical incision to directly access, reduce, and realign the broken septal structures (cartilage and/or bone). Stabilization, such as internal splints or sutures to hold the reduced septum in place, is included when performed but is not required to report the code. The 'with or without stabilization' language means you don't need a separate stabilization code — it's captured here regardless.

Distinguish 21336 from adjacent codes before billing. Code 21337 is closed septal fracture treatment — no incision, no surgical exposure. Code 21335 is open treatment of a nasal bone fracture that concomitantly includes open septal repair; if only the septum was treated openly, 21336 is correct. If both the nasal bones and septum were treated open, 21335 applies instead. Also separate 21336 from septoplasty (30520), which addresses a deviated septum from causes other than acute fracture — conflating these is a common audit flag.

This code carries a 90-day global period. All routine postoperative visits, dressing changes, and nasal packing removal within 90 days are bundled. Billing a separate E/M for a routine post-op visit in that window requires modifier 24 with documentation that the visit addressed a problem unrelated to the septal fracture repair.

RVU & reimbursement

Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU vs. total RVU

The work RVU (6.6) is the surgeon's own effort — the figure physician pay and productivity targets are built on. The total RVU (17.46) adds practice overhead and malpractice, and is what drives the Medicare payment below.

Work RVU	6.6
Practice expense RVU	9.88
Malpractice RVU	0.98
Total RVU	17.46
Medicare national rate	$583.18
Global period	90 days

Payment by site of service

Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.

Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026

Setting	Medicare rate (national)
Office (PFS non-facility) Procedure performed in physician's office	$583.18
HOPD (APC 5113) Hospital outpatient department	$3,342.87
ASC (PI A2) Ambulatory surgical center (freestanding)	$1,644.87

Common denial reasons

The recurring reasons claims for CPT 21336 get rejected.

Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓

Upcoding flag: payer downcodes to 21337 (closed treatment) when operative notes fail to clearly document surgical incision and open exposure of the septum.
Bundling denial when 21336 is billed same-day with 30520 (septoplasty) without adequate documentation that two distinct procedures were performed on separate, clearly described pathology.
Global period denial: post-op visit billed within the 90-day global window without modifier 24 and documentation of an unrelated diagnosis.
Medical necessity denial when imaging (CT or nasal endoscopy findings) is absent from the record and the operative note alone does not establish acute fracture versus chronic deviation.
Incorrect code selection denial when 21335 should have been billed because both nasal bones and the septum received open treatment during the same session.

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 7 cited references ↓

01What is the difference between CPT 21336 and 21337?

21336 is open treatment — a surgical incision is made to directly visualize and reduce the septal fracture. 21337 is closed treatment, meaning the septum is manipulated and stabilized without surgical exposure. The distinction must be explicit in the operative note; if the note is ambiguous, payers default to the lower-value closed code.

02Can I bill 21336 and 30520 together for the same session?

Only if two distinct procedures were performed on separately documented pathology: an acute septal fracture (21336) and a pre-existing septal deviation unrelated to the acute injury (30520). Billing both for the same structural problem is incorrect and will attract audit scrutiny. Use modifier 59 if the procedures are genuinely distinct, and document each indication clearly.

03When should I use 21335 instead of 21336?

Use 21335 when the surgeon performed open treatment of a nasal bone fracture and concurrently performed open treatment of the fractured septum in the same session. Use 21336 when only the nasal septum received open treatment — the nasal bones were either not fractured, treated closed, or not addressed surgically.

04What global period applies to 21336, and what does it cover?

21336 carries a 90-day global period. That covers the day-before visit (if applicable), the procedure itself, and all routine post-op care through day 90 — including packing removal, splint checks, and standard follow-up. Any E/M visit for an unrelated problem during that window requires modifier 24 with supporting documentation.

05Is modifier 22 appropriate for a complicated nasal septal fracture repair?

Yes, when the procedure required substantially more work than typical — for example, severely comminuted fractures, significant scarring from prior trauma, or markedly increased operative time. Attach a cover letter quantifying the additional work, total operative time versus typical, and the specific intraoperative findings that created the complexity. Payers routinely request medical records before approving modifier 22 claims.

06Does the code change if the surgeon accesses the septum through a traumatic open wound rather than a planned surgical incision?

The treatment is still classified as open treatment if the fracture was reduced through direct visualization of the septum, regardless of whether the access was through a traumatic laceration or a planned incision. Document the route of access explicitly so the payer cannot argue closed manipulation was performed.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira Scribe

Mira's AI scribe captures the surgical approach (incision type and location), specific septal structures addressed (cartilage, bone, or both), fracture displacement description, and stabilization method from dictation. That detail prevents the most common denial for 21336 — downcoding to closed treatment (21337) because the operative note lacked explicit documentation of open surgical exposure.

See how Mira captures CPT 21336 documentation