CCSD code D0140 – Excision of preauricular sinus

Key takeaways

CCSD code D0140 covers complete surgical excision of a congenital preauricular sinus tract, not drainage or incision alone.

ICD-10-CM Q18.1 (preauricular sinus and cyst) is the primary diagnosis code that should pair with every D0140 claim.

Most UK private insurers require prior authorisation for elective D0140 excision. A missing reference number is the leading denial trigger.

Practice management software like Pabau helps private practices track authorisation references, attach operative notes, and flag incomplete claims before submission.

CCSD code D0140: what it covers and where it sits in the schedule

CCSD code D0140 covers the complete excision of a preauricular sinus tract, with primary wound closure. The excision takes in the sinus opening, the epithelial-lined tract, and any associated cyst or abscess cavity. It belongs to Chapter 5 (Ear, Nose and Throat) of the Clinical Coding and Schedule Development (CCSD) schedule, in the external ear section. The schedule is maintained by the main UK private medical insurers and adopted across Bupa, AXA Health, Aviva, Vitality, WPA, Healix, Cigna, and Allianz Care.

For a searchable lookup, the Bupa code search portal lists D0140 with its official descriptor and associated fee guidance. Pabau’s CCSD coding guide explains how the chapters are organised if you need to place this code within the schedule.

The code applies to excision only. Simple incision and drainage of an infected preauricular abscess is coded separately. CCSD has no bilateral modifier. When both sides are excised at the same sitting, each payer sets its own rule for reporting the second side. Confirm bilateral handling with the payer before submission.

What is a preauricular sinus? Clinical background

A preauricular sinus is a small, epithelial-lined tract or pit just in front of the helix of the outer ear. It arises from incomplete fusion of the six auricular hillocks during embryological development. The condition is congenital, and ICD-10 classifies it under congenital malformations of the face and neck (Q18). Prevalence estimates range from 0.1% to 0.9% in European populations and up to 10% in some African and Asian populations. That makes it one of the more common minor congenital ear anomalies seen in ENT outpatient practice.

Most preauricular sinuses cause no symptoms for years. Problems arise when the tract becomes blocked and infected, producing pain, swelling, and purulent discharge in front of the ear. Recurrent infection is the main driver of surgical referral. The tract is often tortuous and blind-ending, so it cannot drain reliably. Antibiotics settle acute episodes but leave the underlying tract in place.

When is excision indicated? Medical necessity criteria for D0140

Private payers accept D0140 claims when the operative report and pre-operative notes demonstrate one of the following clinical indications:

• Recurrent infection: two or more documented episodes of acute preauricular sinus infection treated with antibiotics, supported by outpatient letters or GP records
• Abscess formation: at least one episode requiring incision and drainage or parenteral antibiotics, with operative or A&E documentation
• Symptomatic cyst: an enlarging or persistently discharging cyst causing functional impairment or cosmetic concern, confirmed on clinical examination or imaging
• Failed prior excision: residual or recurrent sinus tract following a previous incomplete excision, with reference to the original operative report

Elective excision for a sinus that has never been infected is less consistently covered. Some payers classify it as cosmetic and decline the claim. Document the patient’s symptom history carefully, even when the current episode appears quiescent. Prior infection records are the foundation of a successful medical necessity argument.

What the procedure involves: surgical steps relevant to coding

Knowing the operative technique lets coders check that a D0140 claim matches the procedure performed. The standard approach involves these steps:

1. Probe-guided identification: a lacrimal probe or methylene blue dye is introduced into the sinus opening to show the full extent of the tract before incision
2. Elliptical skin incision: an ellipse of skin around the sinus pit is excised so the opening comes away en bloc with the tract
3. Tract dissection: the whole epithelial-lined tract is dissected free under loupe magnification, down to the perichondrium of the auricular cartilage where it typically ends
4. Complete removal: the tract is excised intact to minimise the risk of recurrence, because incomplete removal is the main cause of failed excision
5. Primary closure: the wound is closed in layers, and a small suction drain may be placed if there was a prior abscess

The operative note must document complete excision, confirm cartilage was reached where applicable, and note whether any abscess cavity was found. Coders reviewing op notes for a D0140 claim should look for language confirming the tract was excised in its entirety. A procedure documented only as “incision and drainage” or “sinus exploration” will not support D0140.

ICD-10-CM diagnosis codes that pair with D0140

Every D0140 claim requires a diagnosis code to establish clinical context for the payer. The primary code is Q18.1.

Q18.1 is the only code that maps directly to preauricular sinus excision, and it is the pairing most UK private insurers expect. Submitting D0140 with an unrelated or non-specific diagnosis code, such as a general “congenital malformation” code, is a common denial trigger. Pabau’s private practice claims software lets practices save reusable code pairs, which reduces the risk of mismatched codes at submission.

Documentation requirements for a successful D0140 claim

Documentation failures are responsible for the majority of D0140 denials. A complete claim submission should include all of the following elements:

• Operative report: must confirm complete excision, describe probe-guided tract identification, and specify that dissection reached the perichondrium. It should also note the closure method and any complications. Language such as “sinus excised in its entirety” is stronger than generic descriptors.
• Pre-operative clinical notes: document the infection history with dates, antibiotic courses, and any previous incision and drainage. Two or more infection episodes are the standard medical necessity threshold.
• Referring clinician letter: many payers require a GP or paediatric referral confirming the clinical history and supporting the recommendation for surgical excision.
• Prior authorisation reference number: for elective cases, obtain auth before admission. The auth reference must appear on the claim form. Missing this number alone accounts for a large proportion of D0140 rejections.
• Anaesthetic record (if applicable): general anaesthesia is common in paediatric cases. The anaesthetist bills separately under the same procedure code, so their record must match the operative note.

Structuring these documents consistently before submission cuts down revision cycles. Digital clinical forms can prompt practitioners to record infection episodes, dates, and prior treatment at the consultation rather than retrospectively. A standard pre-operative checklist then keeps every case file in the order the payer expects.

Prior authorisation: which payers require it for D0140

Prior authorisation requirements for D0140 vary by insurer and individual plan. The table below reflects typical practice. Always verify directly with the payer before the procedure, because requirements change and plan-level rules can differ from standard insurer guidance.

Practices that treat a high volume of private medical insurance (PMI) patients benefit from tracking authorisations systematically. Logging each auth reference against the booking means no case goes to theatre without one.

Codes commonly confused with D0140

Several procedure codes are close enough to D0140 to cause miscoding errors. This happens most when coders work from incomplete operative notes or are unfamiliar with the CCSD chapter structure.

The D0132 vs D0140 distinction is the most common miscoding in this group. A preauricular appendage is a small skin tag or accessory auricle, with no tract and no lumen. A preauricular sinus has an epithelial-lined channel that must be excised completely. The op note’s description of tract identification and dissection is what separates the two.

The choice also changes the fee. The Freedom Health Insurance fee schedule grades D0132 as minor and D0140 as intermediate complexity, as the decision guide below shows.

Is D0140 a CPT code? CCSD vs CPT vs CDT explained

D0140 is a CCSD code, not a CPT code and not a CDT code. These three systems serve different markets, and using the wrong system on a claim is an immediate technical rejection.

• CCSD (Clinical Coding and Schedule Development): used exclusively for UK private healthcare billing with insurers such as Bupa, AXA Health, and Aviva. D0140 belongs here.
• CPT (Current Procedural Terminology): maintained by the American Medical Association for US physician billing. CPT 69110 and 21555 are the US codes most often compared with D0140. They are not interchangeable with it and cannot be submitted to UK insurers.
• CDT (Current Dental Terminology): maintained by the American Dental Association for US dental procedures. CDT also uses D-prefixed codes, which causes confusion. CDT D0140 is a limited oral evaluation and has no clinical relationship to the CCSD D0140 procedure.

When a UK private practice holds international insurance affiliations or treats non-UK patients, the coding system must match the payer’s contract. CCSD is for UK PMI claims, and CPT is for US medical insurance claims. Send a CCSD code to a US payer, or a CPT code to a UK payer, and the claim fails on technical grounds. The official CCSD schedule confirms the D0140 descriptor and code structure.

Reimbursement and fee schedule considerations for CCSD code D0140

CCSD code D0140 reimbursement is set by each insurer, and there is no single national fee schedule. Most insurers publish their rates through a provider portal, so verify the current figure before you quote the patient.

Anaesthetists bill D0140 under the same code, and insurers set their fee separately from the surgeon’s. General anaesthesia is common in paediatric patients and should be agreed in the prior authorisation.

Top reasons D0140 claims are denied and how to prevent them

The denial patterns below recur across UK private insurers for CCSD code D0140 claims.

Billing D0140 for recurrent vs first-time excision

When a patient presents with a recurrent sinus tract after a previous incomplete excision, the code stays D0140. There is no separate CCSD code for revision preauricular sinus surgery. What changes is the documentation burden. The claim must reference the original operative report and confirm residual tract was identified, often with imaging or a dye study. It should also explain why the first excision did not achieve complete removal.

Some insurers require an updated authorisation for revision surgery, even when a valid auth exists for the original procedure. Check with the payer before booking the revision, and don’t assume the first authorisation carries over.

How Pabau keeps D0140 claims complete before they reach the insurer

A D0140 claim often draws on three separate trails. The auth reference sits in an email, the operative note in a letter, and the invoice in a billing tool. When one of them is missing at submission, the insurer rejects the claim or asks for more.

Pabau holds all three against the patient record. The authorisation reference is logged on the booking, and operative notes are stored with the case. The insurer invoice then goes out through Healthcode from the same screen.

The result is fewer returned claims and less chasing after theatre. Your team spends its time on the next surgical list instead of the last one.

Manage CCSD billing and authorisations in one place

Pabau helps private ENT and surgical practices track prior authorisation references, attach operative notes to claims, and submit clean CCSD-coded invoices. Your D0140 claims reach payers complete.

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Conclusion

A D0140 claim holds up when the case file is complete before it leaves the practice. Three weak points cause most rejections. They are a missing auth reference, an op note that stops short of full tract excision, and no recorded infection history.

So build those checks into booking, not billing. Capture infection dates at consultation, log the authorisation before theatre, and send the op note with the invoice. A few extra minutes at booking cost far less than weeks spent chasing a returned claim.

Book a demo to see how Pabau tracks authorisations and operative notes for every CCSD claim your practice submits.

Continue your research

Need a full CCSD code reference for Bupa claims? Bupa CCSD codes reference covers the complete schedule chapter by chapter, with payer-specific billing notes.

Handling multiple UK insurer fee schedules? Bupa procedure code fee schedule breaks down allowed amounts and global period rules for the most commonly billed CCSD chapters.

Is the lesion a skin tag rather than a sinus? CCSD code D0132 covers excision of a preauricular appendage and the documentation that separates it from D0140.

Frequently asked questions