CPT 11730 & 11732: Ingrown Toenail Avulsion Coding Guide (Single vs Additional Nail)

Nail avulsion is a minor surgical procedure in which a physician removes part or all of a fingernail or toenail. It is commonly performed for:

• Ingrown toenails that cause pain, redness, or infection
• Fungal nail infections that don't respond to medication
• Trauma to the nail
• Nail bed damage requiring access for repair

The procedure typically involves:

• Applying a local anesthetic (digital nerve block)
• Separating the nail plate from the nail bed
• Removing the nail partially or completely
• Bandaging the digit

Important: Nail avulsion (11730/11732) is a temporary removal. If the nail is permanently removed along with the matrix, that becomes CPT 11750 — a completely different code.

Official Description:

"Avulsion of nail plate, partial or complete, simple; single"

What It Covers

CPT 11730 is used when a provider removes one nail plate — either partially or completely — using simple avulsion techniques.

• Covers one nail per unit of service
• Applies to both fingernails and toenails
• Includes partial OR complete removal
• Covers both borders of a single nail (do NOT bill each border separately)

Key Rule: One Nail, One Code

When both the lateral and medial sides (borders) of the same nail are treated on the same date of service, you still bill only one unit of 11730. You cannot split the two borders into separate codes.

Official Description:

"Avulsion of nail plate, partial or complete, simple; each additional nail plate (List separately in addition to code for primary procedure)"

What It Covers

CPT 11732 is an add-on code reported for every additional nail treated after the first.

• Always reported alongside CPT 11730
• Never reported alone
• Used once per additional nail
• No additional modifier needed for add-on status

Real-World Example

A patient comes in with five ingrown toenails. The provider performs a simple avulsion on:

• Both sides of the right great toe
• Both sides of the left great toe
• The second digit of the left foot

How to bill:

• 11730 × 1 (first nail — right great toe)
• +11732 × 1 (second nail — left great toe)
• +11732 × 1 (third nail — left second toe)
• Total: 1 unit of 11730 + 2 units of 11732

This is one of the most confusing areas in nail coding. Here's a simple comparison:

11730 vs 11750 — The Most Common Coding Mistake

• Use 11730 when the nail is removed, but the matrix is left intact (nail will regrow)
• Use 11750 when the nail plate AND matrix are permanently destroyed (nail will NOT regrow)

Pro Tip: Always check the operative note. If the provider used phenol, electrocautery, sodium hydroxide, or laser to destroy the matrix — that's 11750, not 11730.

Applying the right modifiers is critical to getting paid. Here's what you need to know:

Digit Modifiers (T Codes)

Use "T" modifiers to identify which toe was treated. This is especially important when multiple nails are treated on the same date.

Other Commonly Used Modifiers

• Modifier RT / LT — Indicates right or left side (used for fingernails)
• Modifier 50 — Bilateral procedure (applicable when appropriate)
• Modifier 59 — Distinct procedural service (use when billing 11730 with another unrelated procedure on the same day)
• Modifier 79 — Unrelated procedure performed during a global period
• Modifier 24 — Unrelated E/M during the post-op period
• Modifier KX — Requirements specified in the medical record are met (used for repeat avulsions within the frequency limits)

This is where many practices lose money. CMS has strict frequency guidelines for nail avulsion claims.

Medicare Frequency Limits

• Toenails: CPT 11730 and 11732 will be denied if billed for the same toe less than 32 weeks (8 months) after a previous avulsion
• Fingernails: CPT 11730 and 11732 will be denied if billed for the same finger less than 16 weeks (4 months) after a previous avulsion

What If a Repeat Avulsion Is Medically Necessary?

If a clinically valid reason exists for a repeat procedure within the restricted timeframe, you must:

• Append Modifier KX to the claim
• Document in the medical record that requirements have been met
• Clearly state the clinical indication — for example:
• Ingrown nail on the opposite border of the same toe
• New significant pathology on the same border recently treated

Without Modifier KX and supporting documentation, the claim will likely be denied on redetermination.

Selecting the right diagnosis code is just as important as the procedure code. Common ICD-10 codes used with nail avulsion include:

Always pair the ICD-10 code to the specific condition documented in the note. Generic or unspecified codes increase audit risk.

Missing or incomplete documentation is the #1 reason nail avulsion claims get denied or audited. Your medical record must include:

Before the Procedure:

• Patient's symptoms and complaints
• Physical exam findings showing the severity of the nail infection, injury, or deformity
• Clinical rationale for why surgical treatment was chosen over conservative options

During the Procedure:

• Method of anesthesia used (or documented reason if not used)
• Specific nail(s) treated (right/left, which digit)
• Whether the removal was partial or complete
• Confirmation that no matrixectomy (matrix destruction) was performed

After the Procedure:

• Post-operative findings
• Instructions given to patient

Critical Note: The medical record must clearly support the ICD-10 code selected. If the documentation doesn't match the diagnosis code, the claim can be denied or flagged in an audit.

CPT 11730 carries a 10-day global period.

What this means:

• Routine post-operative follow-up visits within 10 days are bundled into the procedure payment
• Do not bill a separate E/M code for a standard follow-up within that window
• If a new or unrelated problem is addressed during the global period, use Modifier 24 to bill a separate E/M

Here are the mistakes that cause the most denials and take-backs in nail avulsion billing:

• Billing 11730 twice for both borders of the same nail (only one unit allowed per nail)
• Using 11732 without a primary 11730 on the same claim
• Confusing 11730 (avulsion) with 11750 (permanent excision with matrixectomy)
• Billing 11730 or 11732 with 11750 for the same digit on the same date of service
• Billing 11730 and 11765 (excision of nail fold) together for the same digit on the same DOS
• Forgetting T-modifiers when multiple toes are treated
• Billing within the frequency period without Modifier KX and supporting documentation
• Missing documentation of anesthesia method

To reduce claim denials and improve reimbursement accuracy, learn more about how to avoid common medical billing errors that impact coding and compliance.

Yes — but with caution.

• If the E/M is separately identifiable and beyond the pre-procedure assessment, you can bill it with Modifier 25
• The documentation must clearly show that a significant, separately identifiable evaluation and management service was performed on the same date

Many auditors scrutinize same-day E/M and procedure billing. Make sure your note supports it.

For a better understanding of E/M billing, read our guide on CPT 99211 evaluation and management (E/M) services and common documentation requirements.

Not all payers follow the same rules. Here's what to keep in mind:

• Medicare follows CMS national and local coverage determinations (LCDs) strictly
• Private payers may have different frequency limits, modifier requirements, or coverage criteria
• Some payers may classify certain ingrown toenail treatments as routine foot care — billable with G0127 instead of 11730

Always verify payer-specific policies before billing. What Medicare allows may differ from what BCBS, Aetna, or UHC allows for the same procedure.

Accurate coding for CPT 11730 and 11732 requires proper modifier usage, documentation, frequency tracking, and payer compliance. Summit RCM is specialized in medical billing services, helping podiatry and dermatology practices reduce denials, improve reimbursement accuracy, and streamline medical billing operations.

From coding audits to full revenue cycle management, our team helps keep your claims clean and compliant.

Q1: Can I bill 11732 on a different date than 11730?

No. CPT 11732 is an add-on code and must be billed on the same date as 11730.

Q2: How many times can 11730 and 11732 be billed per day?

Medicare allows 1 unit of 11730 and up to 4 units of 11732 per date of service.

Q3: Can CPT 64450 be billed separately with 11730?

Usually no. The nerve block is bundled into 11730 when performed by the same provider.

Q4: Is nail avulsion considered routine foot care?

No, if it involves proper surgical avulsion with anesthesia and full nail plate removal. Otherwise, it may be treated as routine foot care.

Q5: Can 11730/11732 be billed with 11765 on the same toe?

No. Billing these codes together for the same digit on the same date is not allowed.

Q6: What is the MUE limit for 11732?

Medicare’s MUE for 11732 is 4 units per day. Limits may vary by payer.