Direct Answer
ENT (otolaryngology) billing covers a broad range of surgical and in-office procedures — from functional endoscopic sinus surgery (FESS) and tonsillectomy to in-office laryngoscopy, allergy testing, and audiology. The specialty's extensive in-office procedure portfolio (flexible laryngoscopy, nasal endoscopy, cerumen removal, foreign body removal, in-office allergy testing) is frequently under-billed because these procedures may seem too routine to code separately. Systematic procedure capture for in-office ENT services — not just surgical cases — is one of the highest-impact revenue improvement opportunities in the specialty.
Table of Contents
FESS and Sinus Surgery Codes
Functional endoscopic sinus surgery (FESS) codes are selected based on which sinuses are surgically addressed: 31231 (nasal endoscopy, diagnostic); 31237 (nasal/sinus endoscopy with biopsy/polypectomy — non-surgical diagnostic to surgical); 31238 (nasal/sinus endoscopy with control of nasal hemorrhage); 31239 (nasal endoscopy, with dacryocystorhinostomy); 31240 (nasal/sinus endoscopy with concha bullosa resection); 31253 (total ethmoidectomy — endoscopic, unilateral or bilateral, with sphenoidotomy); 31254 (partial ethmoidectomy — anterior); 31255 (total ethmoidectomy — bilateral); 31256 (maxillary antrostomy — without removal of tissue); 31267 (maxillary antrostomy — with removal of tissue); 31276 (frontal sinus exploration — endoscopic); 31287 (sphenoidotomy — endoscopic, unilateral or bilateral); 31288 (with removal of tissue from sphenoid sinus). Image-guided surgery (IGS): 61782 (IGS — not separately billable during FESS per NCCI in most cases) — verify current NCCI status. Balloon sinus dilation: 31295 (dilation of maxillary sinus ostia); 31296 (frontal sinus ostia); 31297 (sphenoid sinus ostia). The FESS code set requires documentation of each sinus addressed — the more complete the surgical record, the more codes that can be captured from a single case.
Tonsillectomy and Adenoidectomy
Tonsillectomy and adenoidectomy codes are age-specific: 42820 (tonsillectomy and adenoidectomy, under age 12); 42821 (tonsillectomy and adenoidectomy, age 12 or over); 42825 (tonsillectomy only, without adenoidectomy — under age 12); 42826 (tonsillectomy only, age 12 or over); 42830 (adenoidectomy only, primary — under age 12); 42831 (adenoidectomy only, primary — age 12 or over); 42835 (adenoidectomy only, secondary — under age 12); 42836 (adenoidectomy only, secondary — age 12 or over). Control of nasopharyngeal hemorrhage: 42961 (control of nasopharyngeal hemorrhage, complicated, requiring hospitalization). When a tonsillectomy or adenoidectomy is performed as a distinct secondary procedure during a primary procedure under anesthesia, Modifier 51 (multiple procedures) applies to the secondary procedure code. The age criterion (under 12 vs. 12 and over) requires verification of the patient's date of birth at the time of service — this is not about the age the procedure is ordered but the age at time of surgery.
Laryngoscopy Codes
Laryngoscopy codes: 31505 (laryngoscopy, indirect — mirror); 31510 (laryngoscopy, indirect — with biopsy); 31511 (laryngoscopy, indirect — with removal of foreign body); 31515 (laryngoscopy, direct, without operating microscope or telescope); 31520 (laryngoscopy, direct — neonatal, for airway evaluation); 31522 (laryngoscopy, direct — with biopsy); 31525 (laryngoscopy, direct, with or without tracheoscopy, for aspiration); 31526 (laryngoscopy, direct, with or without tracheoscopy, for aspiration with operating microscope or telescope); 31530 (laryngoscopy, direct, with removal of foreign body); 31575 (laryngoscopy, flexible, transnasal, diagnostic, includes stroboscopy when performed); 31576 (laryngoscopy, flexible, transnasal, with biopsy(ies)); 31577 (laryngoscopy, flexible, transnasal, with removal of foreign body); 31579 (laryngoscopy, flexible or rigid, transnasal or transoral, with stroboscopy). In-office flexible laryngoscopy (31575) is among the most frequently performed and most often under-captured ENT procedures — it should be billed whenever performed, including when performed as part of a new or established office visit with Modifier 25 on the E&M code when the laryngoscopy is separately documented and billable.
Hearing Evaluation and Audiology
Hearing evaluation codes billed by the ENT physician or audiologist: 92550 (tympanometry and reflex threshold measurement); 92551 (screening test, pure tone, air only); 92552 (pure tone audiometry — air only); 92553 (pure tone audiometry — air and bone); 92555 (speech audiometry — threshold only); 92556 (speech audiometry — threshold with speech recognition); 92557 (comprehensive audiometry — air and bone testing with speech recognition); 92560 (Bekesy audiometry — screening); 92561 (Bekesy audiometry — diagnostic); 92567 (tympanometry — impedance testing); 92568 (acoustic reflex testing — threshold); 92570 (acoustic immittance testing — includes tympanometry, reflex threshold, reflex decay); 92585 (auditory evoked potentials — comprehensive); 92587 (distortion product evoked otoacoustic emissions — limited); 92588 (comprehensive OAE). ENT physicians performing audiology testing in their practice bill these codes (with or without Modifier 26 depending on setup). Audiologists billing independently follow their professional billing framework. The audiogram report must be in the medical record and support the specific codes billed — all findings must be documented with the audiogram tracing/report.
In-Office ENT Procedures
High-value in-office ENT procedures often under-billed: cerumen removal: 69210 (removal of impacted cerumen, single/both ears — physician required to use instrumentation, not irrigation); nasal endoscopy: 31231 (diagnostic nasal endoscopy — separately billable from the E&M with Modifier 25); foreign body removal from ear: 69200 (removal of foreign body from external auditory canal — without anesthesia); 69205 (with anesthesia); foreign body from nose: 30300 (removal — without anesthesia); intranasal cauterization: 30901 (control of nosebleed — anterior, simple — cautery/packing); 30903 (anterior, complex); 30905 (posterior, with or without anterior — initial); nasal septal button: 30220; myringotomy: 69420 (bilateral or unilateral — without tube); tympanostomy (tube placement): 69433 (tympanostomy — with general anesthesia); 69436 (with topical or local anesthesia). In-office procedures performed on the same day as an E&M visit are separately billable when a significant, separately identifiable service is documented — the E&M and procedure note must each be complete and separately documented. For minor procedures with 0-day global periods, Modifier 25 on the E&M establishes that the E&M was a separate and significant service.
FAQ
How should an ENT practice bill when cerumen removal is performed during a routine office visit?
Cerumen removal (69210) is a 0-day global period procedure — the surgical fee covers the service for that day only. When performed during an office visit, both the E&M code and 69210 may be billed when: (a) a separately identifiable E&M service was performed beyond the cerumen removal (i.e., the visit had clinical content beyond just removing the wax), and (b) Modifier 25 is appended to the E&M code to indicate that a significant, separately identifiable E&M service was performed on the same day as the procedure. If the patient came in solely for cerumen removal and no other clinical evaluation occurred, only 69210 is billed — there is no E&M to separately bill. A note that says "patient presented for ear check — cerumen noted and removed — no other complaints" supports only 69210. A note that documents evaluation of hearing loss, otitis media history, recommendation for further audiologic evaluation, etc., in addition to the cerumen removal supports both 69210 and an E&M code with Modifier 25. The documentation must reflect what was actually done and discussed — not just checked boxes to justify dual billing.
Are FESS codes billed per side or as bilateral procedures?
Most FESS codes are bilateral by nature — the code descriptor specifies "unilateral or bilateral" for the global code, meaning one code covers both sides when performed bilaterally. For example, 31254 (partial ethmoidectomy) covers both sides when performed bilaterally under the single code — the code already accounts for the bilateral nature and the payment is not doubled. Modifier 50 (bilateral procedure) is NOT used for FESS codes that specify "unilateral or bilateral" in the code description — those codes are already priced to include both sides. However, some codes are per-sinus or per-side — read each code's descriptor carefully. When multiple sinuses are addressed bilaterally in a single FESS session, multiple codes (each for a different sinus type) may be billed — e.g., bilateral ethmoidectomy (31254) + bilateral maxillary antrostomy (31256) + bilateral frontal exploration (31276). Each code represents a different sinus anatomic area and all are separately billable. The operative report must clearly describe which sinuses were addressed and what was done in each to support each code billed.
ENT Billing That Captures Every Procedure
Valiant Lifecare's ENT billing team systematically captures in-office procedures, surgical case complexity, audiology professional component billing, and modifier compliance — turning the full scope of otolaryngology services into captured revenue.
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