CCSD code C1813 – Ptosis correction with a fascia lata sling

Key takeaways

CCSD code C1813 covers correction of ptosis of the eyelid with autologous fascia lata, the procedure usually called frontalis suspension.

The graft comes from the patient’s own thigh, so the operative note should record the harvest site as well as the lid work.

CCSD lists C1810, C1812, C1818, C1420, C1700 and C1710 as unacceptable combinations with C1813.

Insurers often ask for evidence that the droop affects vision before they authorize ptosis surgery.

Most queried C1813 claims trace back to a missing authorization, a vague note or a blocked code pair.

CCSD code C1813 bills ptosis correction with a fascia lata sling

CCSD code C1813 is the schedule entry for correction of ptosis of eyelid with autologous fascia lata. Surgeons use it when they lift a drooping upper lid with a sling made from the patient’s own fascia lata. That tissue is the tough sheet of connective tissue on the outer thigh.

The code sits in chapter 4 of the CCSD schedule, Eye and orbital contents, under 4.2.0 Eyebrow and lid. CCSD grades it as a Major procedure. UK private medical insurers use CCSD codes to process consultant invoices, so the code on the claim tells them exactly which operation took place.

Two words in the descriptor carry the claim. “Autologous” means the graft came from the same patient. “Fascia lata” names the tissue. If the sling used any other material, C1813 is the wrong entry, and the note will show it. The diagram below shows which entry each type of repair points to.

Frontalis suspension is the operation behind C1813

Frontalis suspension connects the upper lid to the frontalis, the forehead muscle that raises the brow. Once the sling is in place, the patient lifts the lid by lifting the brow. Surgeons choose it when the lid’s own lifting muscle, the levator, works poorly or not at all.

Typical indications include congenital ptosis with poor levator function, myogenic ptosis and some cases of third nerve palsy. The operation runs in three steps:

1. Graft harvest. The surgeon makes a small incision above the knee on the outer thigh. A fascia stripper then removes a long strip of fascia lata, which is cut into narrow bands.
2. Lid and brow work. Small stab incisions are made along the lid margin and above the brow. The bands are threaded between them in a pentagon or similar pattern.
3. Tensioning and closure. The surgeon adjusts the tension to set the lid height, ties the bands and buries the knots under the brow incisions. Both wounds are then closed.

Because the procedure involves a second surgical site, the thigh, the paperwork has more to cover than a standard lid repair. That is where many C1813 claims slip.

Neighboring codes decide most C1813 queries

The eyelid section of the schedule holds several ptosis entries, and they look alike on an invoice. CCSD treats the codes below as unacceptable combinations with C1813. In practice, that means you should not bill any of them with C1813 for the same eye in the same operation.

The CCSD Technical Guide (October 2025) explains how the schedule handles combinations. Always check the current schedule version as well, since entries and rules change between releases.

The operative note has to name the graft and the harvest site

An insurer reviewing a C1813 claim will look for the two facts in the descriptor. The note should show that fascia lata was used, and that it came from the patient. A note that says “brow suspension performed” without naming the material leaves the reviewer guessing.

A note that supports C1813 records:

• The indication, including the levator function measurement and the lid position before surgery.
• Which eye was treated, or whether both lids were done.
• The harvest site, for example the left lateral thigh, and how the fascia was taken.
• The sling pattern, the number of bands and where the knots were buried.
• The final lid height and contour once the tension was set.
• Closure of both the thigh wound and the lid and brow incisions.

Write the note on the day of surgery. A later addendum is possible, but insurers give more weight to a note written at the time.

Insurers want proof the droop affects sight

Many insurers treat ptosis surgery as cosmetic unless the records show a functional problem. Before they authorize C1813, expect them to ask how far the lid covers the pupil. Some also want a visual field test or clinical photographs.

Pair C1813 with a diagnosis code that matches the cause. UK insurers use ICD-10, where Q10.0 covers congenital ptosis and H02.4 covers acquired ptosis of the eyelid. A congenital case coded as acquired, or the reverse, is an easy way to earn a query.

Authorization rules differ from one insurer to the next and change over time. Confirm the code with each insurer before the surgery date. Bupa members can be checked on the Bupa code search, and the Bupa CCSD codes guide explains how Bupa applies the schedule.

How a C1813 claim moves from booking to payment

Most CCSD claims travel electronically through Healthcode, which passes them to the insurer. A typical C1813 claim follows this path:

1. Booking. The practice checks the patient’s policy and requests authorization for C1813 with the matching diagnosis code.
2. Surgery. The surgeon performs the procedure and writes the operative note the same day.
3. Coding. A biller compares the note with the C1813 descriptor and the authorized code.
4. Invoice. The invoice lists C1813, the authorization number and the patient’s membership number. The anesthetist bills separately on their own invoice.
5. Submission. The claim goes through Healthcode, and the practice saves the claim reference with the patient record.
6. Payment or query. The insurer pays, or asks for more detail, usually the operative note.

Before you submit a C1813 claim, run this checklist

Five checks catch most problems before the insurer sees them:

• The authorization covers C1813, not C1810 or C1812.
• The operative note names autologous fascia lata and the harvest site.
• No unacceptable combination code sits on the same invoice for the same eye.
• The diagnosis code matches the cause of the ptosis.
• The fee matches your agreed schedule with that insurer.

If one check fails, fix it before you submit. Correcting a claim before it goes out is quicker than disputing a query later.

Common C1813 mistakes, and how to fix each one

These are the errors that most often turn a straightforward C1813 claim into a query.

How claims management software keeps C1813 claims clean

In many practices, the operative note lives in one system and the invoice in another. The Healthcode claim often sits in a third. Each hand-off is a chance for the harvest detail or the authorization number to drop off the claim.

Pabau, the practice management platform we build for private practices, keeps those steps on one patient record. Its claims management software sends CCSD-coded claims to Healthcode from that record, with checks before submission. You can then follow each claim’s status and reconcile the payment in the same place.

The result is fewer queried claims, and less time spent chasing paperwork after the patient has gone home.

Submit cleaner CCSD claims from one record

Pabau keeps the operative note, the invoice and the Healthcode claim on one patient record. That way, each C1813 submission carries the detail insurers check.

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Conclusion

C1813 is a narrow code. It fits only when the surgeon lifts the lid with a sling of the patient’s own fascia lata. Treat the graft as the fact the claim rests on, and make sure the note says where it came from.

Confirm the authorization before the surgery date and keep the blocked ptosis codes off the invoice. Do that, and most C1813 claims go through without a query. The cost is a few minutes of checks at booking, which is far less than a resubmission takes.

Want your notes, invoices and Healthcode claims on one record? Book a demo and we’ll walk you through a private surgical claim from start to finish.

Continue your research

Billing across several private insurers? Bupa CCSD codes explains how Bupa applies the schedule, and where its rules differ from other insurers.

Treating a lid lesion instead? CCSD code C1230 covers curettage or cryotherapy of an eyelid lesion.

Working at the corner of the eye? CCSD code C1110 walks through excision of a lesion of the canthus.

Billing ptosis repair for US patients? CPT code 67904 covers levator resection, the CPT route for blepharoptosis repair.

Frequently asked questions