CPT code 11422 – Benign lesion excision, scalp, neck, hands, feet

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Key takeaways

CPT Code 11422 covers benign lesion excision on scalp, neck, hands, feet, or genitalia only, not trunk or extremities.

The excised diameter including margins must measure 1.1 to 2.0 cm. Below that range use 11420 or 11421, above it use 11423 or higher.

Simple closure is bundled into the code. Intermediate or complex closure (12031-12057, 13100-13160) is billed separately when performed.

Medicare does not cover cosmetic benign lesion removal. Documentation must establish medical necessity with a supported ICD-10 diagnosis.

Pabau’s claims management software keeps CPT code selection, documentation, and claim submission in one workflow, which removes the manual steps behind most 11422 denials.

CPT Code 11422: Official descriptor and procedure overview

The American Medical Association publishes the official descriptor for CPT Code 11422. It reads: “Excision, benign lesion including margins, except skin tag (unless listed elsewhere), scalp, neck, hands, feet, genitalia; excised diameter 1.1 to 2.0 cm.” That descriptor carries three separate billing conditions, and failing any one triggers a denial. The procedure must be an excision rather than a destruction, and the lesion must be benign. The excised diameter including margins must then fall between 1.1 and 2.0 cm at one of the five named anatomical sites.

The code belongs to the integumentary system section of the CPT codebook. It is a global-period code: simple wound closure is bundled, and the surgical package includes typical preoperative and postoperative care. Separate billing for a simple repair alongside 11422 violates Correct Coding Initiative (CCI) edits and will be denied. Dermatology and plastic surgery practices meet this code most often for seborrheic keratoses, dermatofibromas, epidermal inclusion cysts, and lipomas on the neck or scalp.

Anatomical sites and size criteria: When to use 11422

The 11420-11426 series is restricted to five anatomical locations: scalp, neck, hands, feet, and genitalia. These sites are grouped together because they present greater surgical complexity than trunk or extremity skin. Closure and healing considerations differ, and payers reimburse the series at a higher rate than the 11400 trunk and extremity codes.

Excision of benign lesions on the face, ears, eyelids, nose, or lips belongs to a third separate series (11440-11446). Understanding these three parallel series is the foundation of correct code assignment. Grouping errors between the three account for a large proportion of anatomical-site denials.

How to measure excised diameter correctly

The excised diameter is measured at the time of surgery and includes the lesion plus the margin of normal tissue removed around it. It is not the size of the lesion itself and it is not the size of the wound after closure. The AMA guidelines specify the greatest excised diameter, measured in centimeters at the time the specimen is removed.

• Measure the excised specimen, not the wound edge after closure, which may be larger due to undermining
• Include the margin — a 0.8 cm lesion excised with 0.2 cm margins circumferentially gives an excised diameter of roughly 1.2 cm. That puts the procedure in 11422 range
• Record the measurement in the operative note — without it, the payer defaults to the smallest tier
• Use the largest dimension when the excised specimen is not perfectly round

CPT Code 11422 vs adjacent codes: Choosing the right code

The two most consequential code comparisons for 11422 are against 11402 (same size tier, different site) and against 11421/11423 (same site, adjacent size tiers). Confusing any of these produces either an underpayment or a claim denial. The chart below sets out every condition the claim has to clear, and the code that applies when one of them fails.

11422 vs 11402: The most common confusion

CPT code 11402 covers excision of a benign lesion on the trunk, arms, or legs in the 1.1 to 2.0 cm excised diameter range. It is the direct anatomical counterpart to 11422. Both codes share the identical size tier, and the only distinction is the body region. Assigning 11402 to a neck or hand lesion, or 11422 to a forearm or back lesion, produces a denial or a post-payment audit finding.

Destruction vs excision: 11422 vs 17110/17111

Excision codes (11422 and its series) require removal of the lesion as a specimen. Destruction codes 17110 and 17111 cover ablation of benign lesions by any method, including cryotherapy, laser, or electrodesiccation, where no specimen is sent to pathology. Using 11422 when the procedure was a destruction, or the reverse, constitutes miscoding. Payers also cross-reference claim data against pathology billing. If you bill 11422 and no CPT 88305 pathology code follows, some payers flag the claim for review.

CPT Code 11422 modifiers: What to append and when

Modifier selection for CPT Code 11422 decides whether a claim pays, underpays, or denies. Four modifiers come up most often with this code, and each one serves a different function. Payer policy on two of them varies enough that it is worth confirming before the procedure.

When multiple lesions are excised on the same day, each lesion is billed separately at the appropriate size and site code. The first lesion does not require Modifier 59; add Modifier 59 to each additional lesion to indicate they are distinct services. Payers then apply a multiple-procedure reduction to the secondary codes under Modifier 51 rules. That is typically 50% of the fee schedule rate for the second procedure, and 25% for the third and beyond.

Medicare and payer reimbursement for CPT Code 11422 (2026)

Medicare reimburses CPT Code 11422 under the Medicare Physician Fee Schedule (MPFS), with rates varying by geographic locality and practice expense (PE) inputs. The non-facility rate (office-based) is higher than the facility rate for a hospital or ambulatory surgical center. That is because the non-facility PE component reflects the cost of supplies and equipment borne by the practice. Current 2026 rates can be verified through the CMS Physician Fee Schedule lookup tool, which allows searching by code and locality.

The FastRVU 2026 lookup tool breaks the code into its Work RVU, Practice Expense RVU, and Malpractice RVU components. Its figures are sourced from the CMS files. The national Medicare conversion factor for 2026 sets the dollar value of each RVU, and geographic adjustments (GPCIs) then modify that rate by locality. Practices that submit claims electronically get line-item payment details back on the remittance advice. That is the quickest way to confirm 11422 paid at the expected rate.

Commercial payer rates for 11422 are contractually determined and typically expressed as a percentage of the Medicare fee schedule. They cannot be stated as a single figure without payer-specific contract data. Rates in high-cost metropolitan areas may sit well above national averages, while rural locality rates may be lower.

Medicare coverage requirements and medical necessity

Medicare does not cover benign lesion excision that is cosmetic in nature. CMS Article A57482 sets out the coverage policy, and it turns on medical necessity. The lesion must be symptomatic, with bleeding, pain, infection, rapid growth, or functional impairment, or it must be clinically suspicious. A lesion excised solely for cosmetic reasons is a statutory non-covered service and will deny regardless of documentation quality. Dermatology and plastic surgery practices routinely audit their own 11422 claims to confirm that a covered diagnosis supports each one.

• Documented symptoms (bleeding, pain, pruritus, functional obstruction) support medical necessity
• Rapid change in size, color, or border warrants excision even for a clinically benign-appearing lesion
• Cosmetic indication alone (the patient dislikes the appearance) is a non-covered service under Medicare
• Local Coverage Determinations (LCDs) published by each Medicare Administrative Contractor (MAC) may impose documentation requirements beyond national policy

ICD-10 diagnosis codes commonly paired with CPT 11422

Every 11422 claim needs a supported ICD-10-CM diagnosis before a payer treats the excision as medically necessary. A cosmetic-only or unspecified diagnosis triggers a denial under both Medicare and most commercial policies. The table below lists the ICD-10-CM codes that most often establish medical necessity for benign lesion excision at the qualifying anatomical sites.

Always use the most specific ICD-10-CM code available. D23.x codes require a 4th character that specifies the anatomical site of the skin lesion, and submitting the unspecified parent code risks a specificity denial. Our ICD-10-CM code library lists the site-specific options within each of these families. For a searchable crosswalk between ICD-10 diagnoses and CPT codes, the AAPC CPT-to-ICD-10 crosswalk is a useful reference.

Documentation requirements for CPT Code 11422

Documentation failures are the second most common cause of 11422 denials, after wrong anatomical-site coding. A procedure note that records the excised diameter, the site, and the clinical indication in specific terms is what gets the claim paid. Anything vaguer invites a request for medical records. A clean claim for this code starts in the operative note, before anyone opens the billing screen.

• Anatomical site: specify exactly (e.g. “left posterior scalp,” not “scalp”)
• Lesion description: size, color, border characteristics, duration, and symptoms
• Excised diameter with margins: state the measurement in centimeters at time of removal (e.g. “excised diameter 1.4 cm including 2 mm margins”)
• Closure type: state whether closure was simple (bundled) or intermediate/complex (separately billable)
• Indication for surgery: document the clinical reason that establishes medical necessity
• Laterality: left or right for paired sites (hands, feet)
• Pathology submission: note whether specimen was sent; if sent, separately bill CPT 88305 when report is returned

Structured procedure note templates built in claims management software can pre-populate these required fields, which cuts omission errors. When all seven data points above appear in the note, the claim carries what it needs to survive payer review without a medical records request.

What is included and not included in CPT 11422

CPT Code 11422 is a surgical package that bundles specific services by definition. Billing separately for bundled components violates CCI edits and exposes the practice to recoupment. Knowing what sits inside the package prevents both underbilling and overbilling.

Common claim denial reasons for CPT Code 11422 and how to avoid them

Knowing the root causes of 11422 denials matters as much as knowing the code’s descriptor. Most denials fall into one of six patterns, and each has a specific prevention step. Practices with structured denial management workflows spot these patterns systematically rather than treating each rejected claim in isolation. The CARC reason code returned on the remittance tells you which category the payer applied.

• Wrong anatomical site: 11422 claimed for a trunk or arm lesion that should be 11402. Prevention: code from the operative note site documentation, not from the encounter form
• Cosmetic procedure: Medicare LCD excludes coverage when the indication is aesthetic. Prevention: document symptoms or clinical concern in the note before the procedure
• Bundling error: simple repair billed separately alongside 11422. Prevention: suppress 12001-12021 from auto-populated billing screens when 11422 is selected
• Missing or insufficient documentation: no excised diameter recorded, or site not specified. Prevention: use structured note templates with required fields
• Missing prior authorization: certain commercial payers require prior auth for outpatient excisions. Prevention: verify authorization requirements during the eligibility check
• Size tier mismatch: documentation records an excised diameter outside the 1.1-2.0 cm range but 11422 was billed. Prevention: audit the size documented in the note against the code billed before submission

Billing CPT 11422 with an E/M code on the same day

An evaluation and management service (CPT 99202-99215) can be billed on the same date as CPT Code 11422. The E/M has to represent a separately identifiable service beyond the decision to perform the excision. Modifier 25 appended to the E/M code signals to the payer that the two services are distinct. Without Modifier 25 on the E/M, the payer bundles it into the global surgical package. The E/M is then not separately reimbursed.

The E/M must be documented separately from the procedure note. A note that consists only of the operative record, with no distinct problem-focused assessment, does not support a separate E/M. Payer policies vary here. Some commercial payers follow the CMS Modifier 25 guidance precisely, while others add documentation requirements of their own. Reviewing E/M-plus-procedure claims periodically keeps Modifier 25 usage in line with your payer contracts.

How Pabau connects 11422 documentation to the claim

Most practices record the excision in one system and build the claim in another. A coder reads the operative note, then retypes the site, the excised diameter and the closure type onto the claim form. Every retyped field is another chance to drop the measurement that decides the size tier.

Practice management software like Pabau keeps both steps on the same patient record. The procedure note carries structured fields for anatomical site, excised diameter with margins, closure type and indication. Those values travel with the claim, so the coder reads the clinician’s own entry instead of interpreting free text.

Claims then submit electronically, and the remittance returns against that same record. When a payer denies an 11422 line, you can see which documented value it disagreed with without reopening two systems. Every Pabau subscription includes the full feature set, so claims tooling is never a tier you have to upgrade into.

Stop losing revenue to CPT coding errors

Pabau keeps your procedure documentation, CPT code assignment, and claim submission in one connected workflow. Teams that document the excision in Pabau can queue the claim without re-entering data or switching platforms.

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Conclusion

11422 is narrow by design. Four conditions have to hold at once: the anatomical site, the size tier, benign pathology, and an excision rather than a destruction. Miss any one of them and the claim denies.

The measurement is what goes missing most often. A note reading “lesion excised from scalp”, with no excised diameter, leaves the payer free to assume the smallest tier. The practice absorbs the difference. Writing the number down at the moment of removal costs seconds and protects the whole claim.

Pabau’s claims management software connects procedure documentation directly to claim submission, so the fields that decide code selection are captured at the point of care. Teams that want to bring down 11422 denial rates can book a demo and see the excision workflow run from note to claim.

Continue your research

Is it 11422 or 11402? CPT code 11402: Benign lesion excision, 1.1-2.0 cm sets out the anatomical site split that decides which of the two you bill.

Was the lesion destroyed rather than cut out? CPT Code 17110: Destruction of benign skin lesions billing guide covers the technique and lesion-count rules behind the destruction codes.

Same excision, but on the trunk, arms or legs? CPT code 11400: Excision of benign lesion, trunk, arms or legs handles the site family that 11422 excludes.

Reading a denial on the remittance? Denial codes in medical billing: The top 20 CARC codes and how to fix them explains what each CARC code means and the fix.

Billing an E/M visit on the same day? Medical decision making (MDM): Components, levels, and documentation shows how to document the level that supports a separate visit.

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