CPT code 69631 – Tympanoplasty without mastoidectomy

Key takeaways

CPT code 69631 covers tympanoplasty without mastoidectomy and without ossicular chain reconstruction, for both initial and revision procedures.

The operative note must confirm no ossicular chain reconstruction and no mastoid work, or payers may deny or downcode the claim.

69631 is unilateral. Bilateral same-session surgery takes modifier 50, which Medicare pays at 150% of the single-ear rate.

In 2026, 69631 carries 23.93 total facility RVUs and a 90-day global period under the Medicare Physician Fee Schedule.

Pabau’s claims management software runs validation checks before each claim goes out and submits US claims through its Claim.MD integration.

CPT code 69631: Official descriptor and procedure overview

CPT code 69631 describes tympanoplasty without mastoidectomy (including canalplasty, atticotomy and/or middle ear surgery), initial or revision, without ossicular chain reconstruction. The American Medical Association (AMA), which publishes and maintains the CPT code set, uses the same code for initial and revision encounters.

Three structural facts define the code’s scope:

• No mastoidectomy: The surgical approach does not enter or remove mastoid air cells. Tympanoplasty with antrotomy, mastoidotomy, or mastoidectomy belongs to a separate code family, 69635-69646.
• No ossicular chain reconstruction: The ossicular chain (malleus, incus, stapes) is not repaired, replaced, or reconstructed. If the chain is reconstructed, the correct code is 69632, or 69633 when a synthetic prosthesis is placed.
• Canalplasty and atticotomy are included: Per the AMA descriptor, canalplasty and atticotomy in the same session are bundled into 69631. They are not separately billable.

Initial encounters (first-time repair) and revision encounters (repeat surgery on a repaired eardrum) both use 69631. The condition is that neither mastoid work nor ossicular chain reconstruction is performed.

Clinical steps relevant to billing CPT 69631

A coder selecting between 69631, 69632, and 69633 needs to understand the surgical sequence, because the code selection pivot point occurs mid-procedure. The surgeon begins with tympanic membrane repair and decides intraoperatively whether ossicular chain work is necessary.

The operative steps a billing team should look for in the procedure note:

1. Approach: Transcanal, endaural, or postauricular incision. The approach alone does not determine code selection.
2. Canalplasty (if performed): Bone removal to widen the ear canal. Bundled into 69631 per descriptor; document but do not bill separately.
3. Atticotomy (if performed): Opening of the epitympanic space. Also bundled; document the extent to confirm mastoidectomy was not performed.
4. Tympanic membrane repair: Graft placement (temporalis fascia, perichondrium, or fat) over the perforation. The graft type and size support medical necessity.
5. Ossicular chain inspection: The note must state whether the chain was assessed and explicitly confirm it was left intact and not reconstructed.
6. Closure: Packing, dressing, and wound closure specifics matter for global period calculations.

Step 5 is where 69631 notes most often fall short. Surgeons who inspect the ossicular chain but do not reconstruct it often omit the negative finding from their dictation. Without it, payers treating the claim as potentially upcoded to 69632 will request additional documentation or deny outright.

CPT 69631 vs 69632 vs 69633: Choosing the right code

The three codes share one descriptor stem: tympanoplasty without mastoidectomy, initial or revision. They split on what happens to the ossicular chain. 69632 adds ossicular chain reconstruction, and 69633 adds reconstruction with a synthetic prosthesis such as a PORP or TORP.

Read the operative note in the order below, and the code follows from three answers.

One detail in the 2026 fee schedule surprises coders. 69633 carries fewer total facility RVUs than 69632, at 28.24 against 29.02, so placing a prosthesis does not raise the payment. Mastoid work moves the case out of this ladder entirely, into codes 69635-69646.

Intraoperative upgrade scenario: If a surgeon begins a 69631 case and finds that ossicular chain damage needs reconstruction, the correct code becomes 69632. If a PORP or TORP is placed, it becomes 69633. The operative note must document the intraoperative finding that prompted the change.

Billing 69631 when the note describes ossicular reconstruction is undercoding. Billing 69632 or 69633 without documented reconstruction is upcoding, which exposes the practice to recoupment.

CPT 69631 vs CPT 69610 (myringoplasty): Understanding the distinction

CPT 69610 covers myringoplasty, a procedure limited to patch repair of the tympanic membrane without entering the middle ear space. CPT 69631 involves full tympanoplasty, which includes middle ear exploration and graft placement that restores or reconstructs the tympanic membrane with middle ear access.

Billing 69610 when the note documents middle ear exploration and a fascia graft is undercoding. Billing 69631 when the note describes only a patch repair without middle ear entry is upcoding. Both errors generate payer recoupment risk.

ICD-10 codes that support a CPT 69631 claim

Tympanic membrane perforation codes from the H72 series are the primary diagnoses paired with CPT 69631. Payers expect laterality, and an unspecified-ear code is a common medical necessity denial trigger.

Additional supporting diagnoses may include chronic otitis media (H65/H66 series) where persistent infection caused the perforation. Always code the underlying etiology when documented. Payers use it to confirm medical necessity for surgery over watchful waiting. Check payer-specific local coverage determination (LCD) requirements, as criteria vary.

Documentation requirements: What must be in the operative report

A complete operative report for CPT code 69631 must contain six elements to withstand payer audit. Missing any one of them produces a documentation denial or opens the practice to recoupment under medical necessity review. Submitting a clean claim submission starts with a note that covers all six.

• Surgical approach: Transcanal, endaural, or postauricular, documented with anatomical landmarks.
• Extent of canalplasty or atticotomy: If performed, document scope. This confirms the procedure was within the 69631 descriptor and was not a mastoidectomy.
• Graft type and source: Temporalis fascia, tragal perichondrium, or fat graft. The specifics support medical necessity and rule out a patch repair (69610).
• Middle ear exploration findings: State what was found (fluid, adhesions, mucosal condition) and what was done.
• Explicit ossicular chain statement: “Ossicular chain was inspected and found intact; no reconstruction was performed.” This single sentence is the most frequently missing element in 69631 operative notes.
• Confirmation of no mastoidectomy: The note must state, or make clear from the surgical description, that mastoid air cells were not entered.

Structured operative note templates let ENT practices catch a missing element before the note is signed. A mandatory ossicular chain field on that template removes the most common reason 69631 notes fail review.

Modifiers for CPT 69631: Bilateral, complexity and global period

CPT 69631 is a unilateral code by descriptor. Three modifiers apply in defined circumstances, and using any of them incorrectly generates either underpayment or a claim edit.

90-day global period: CPT 69631 carries a 90-day global surgical period under Medicare. Routine post-operative visits, dressing changes, and ear canal cleaning within 90 days are bundled into the surgical fee. Medicare does not pay separately for treating a complication that does not need a return to the operating room.

An E/M visit for an unrelated problem during those 90 days takes modifier 24, with the unrelated condition documented. Modifier 79 (unrelated procedure) applies when a new, unrelated procedure is performed on either ear during the global period.

Fee schedule, RVUs, and reimbursement rates for CPT 69631

Medicare reimburses CPT 69631 based on the 2026 Medicare Physician Fee Schedule (MPFS). Rates vary by geographic pricing locality. CMS prices 69631 in the facility setting only, so the figures below are national facility values and there is no non-facility rate. Always verify current payment amounts using the CMS Physician Fee Schedule lookup tool for your specific locality.

At the 2026 conversion factor of $33.4009, 23.93 RVUs works out to about $799 nationally before geographic adjustment. Qualifying participants in Advanced Alternative Payment Models (APMs) use a slightly higher factor of $33.5675.

The CMS relative value files carry the geographic practice cost index (GPCI) for each locality. ASC facility rates for CPT 69631 are published separately in the CMS ASC Payment System and differ from the physician rate. Verify the ASC rate if your practice performs tympanoplasty in an ambulatory surgery center setting.

Prior authorization requirements for CPT 69631 tympanoplasty

Prior authorization requirements for tympanoplasty vary by payer type and individual plan. There is no universal rule. Treat each payer as a separate inquiry and verify before scheduling surgery.

Confirming insurance eligibility verification before the procedure date is the first step in catching plans that require pre-authorization. Pair this with attention to medical billing compliance requirements for ENT surgical procedures.

• Medicare (traditional): Prior authorization is not routinely required for 69631 under traditional Medicare.
• Medicare Advantage: Many plans require prior authorization for ENT surgery. Ask for the documentation list early, since plans often want audiometric results, a trial of conservative treatment, and a medical necessity form.
• Commercial insurance: Requirements vary by carrier and plan, so check each plan’s prior authorization list for 69631. Submit the operative plan, diagnostic workup, and prior treatment history with the request.
• Medicaid: Rules are state-specific. Many state Medicaid programs require prior authorization for elective ENT surgery, with lead times set by each state.

A prior authorization request should include audiometric testing results and the documented duration and conservative treatment of the perforation. Add the clinical rationale for surgery over continued observation. Payers use this to apply their medical necessity criteria, which may differ from AMA coding standards.

Common claim denial reasons for CPT 69631 and how to prevent them

CPT 69631 denials cluster around five patterns. Each has a specific root cause and a fix that can be built into the billing workflow. Robust denial management workflows catch most of these before claims leave the practice.

Log the denial reason code on every 69631 appeal to see which pattern costs your practice most. Our guide to medical billing denial codes maps each claim adjustment reason code (CARC) back to these root causes.

How claims management software prevents CPT 69631 denials

In many ENT practices, a 69631 claim passes through three hands. The surgeon dictates the note, a coder picks the code, and a biller keys the claim into a clearinghouse or payer portal. Each handoff is a chance to lose a detail the payer needs.

Pabau, the practice management platform we build, includes claims management software that keeps those steps in one place. Add the patient’s insurer and policy to their record, and each invoice routes to the right payer automatically. Before a claim goes out, Pabau runs validation checks to confirm details like membership numbers and authorization codes are in place.

US claims go out through Pabau’s Claim.MD integration, which submits to thousands of payers. Real-time eligibility checks run from the client card, and Claim.MD supports them for over 400 payers, as our Claim.MD clearinghouse review explains. Every claim then sits on one dashboard as pending, submitted, processing, paid, or error, so a stalled 69631 claim gets noticed early.

Send cleaner 69631 claims from one dashboard

Pabau checks each claim for missing details like membership numbers and authorization codes before it goes out. It then submits through Claim.MD and tracks every claim until it’s paid.

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Conclusion

A 69631 claim is only as strong as the sentence in the operative note that rules out ossicular reconstruction and mastoid work. Payers code from what the surgeon dictated, so a silent note invites a query even when the surgery matched 69631 exactly.

Start with the dictation template, then confirm prior authorization and laterality before the claim leaves. Those three checks address most of the denial patterns in this guide. Remember too that the prosthesis code, 69633, pays slightly less than 69632 in 2026, so the code should follow the note and nothing else.

Book a demo to see how Pabau validates, submits, and tracks your ENT claims from invoice to payment.

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