D7440 is the CDT code for the excision of a malignant tumor measuring up to 1.25 cm in diameter — the surgical removal of a cancerous lesion of the oral soft or hard tissues (such as the tongue, gingiva, palate, or jaw). It applies when the lesion is confirmed or treated as malignant and is 1.25 cm or smaller.
Informational only — confirm the official CDT descriptor and your payers' rules independently. This is general guidance, not billing, coding, or clinical advice.
When to Use the D7440 Code
Report D7440 when the surgeon excises a malignant oral tumor that is 1.25 cm or smaller in diameter. This is the complete surgical removal of a cancerous lesion, not a diagnostic sampling.
Size and behavior are the two key variables. D7441 is the same excision for a malignant tumor greater than 1.25 cm. If the lesion is benign, the excision codes are D7410 (up to 1.25 cm) or D7411 (greater than 1.25 cm) instead. And if only a portion of the lesion is removed to establish the diagnosis, the correct codes are the incisional biopsy codes D7286 (soft) or D7285 (hard), not D7440. Because malignancy is involved, the diagnosis is typically confirmed by pathology before or in conjunction with the excision.
Documentation & Clinical Scenarios
Thorough documentation supports the excision and medical necessity:
- Site and a confirmed or strongly suspected malignant diagnosis, ideally supported by prior pathology.
- Lesion diameter documented as 1.25 cm or smaller, since size determines D7440 vs. D7441.
- A surgical narrative confirming complete excision of the malignant tumor and the margins addressed.
- Pathology reports establishing malignancy and, when applicable, the post-excision specimen analysis.
The pathology laboratory analysis is billed separately. Reconstructive, grafting, or other concurrent procedures are also reported under their own codes. Cancer cases are frequently coordinated with the patient's medical plan.
Insurance & Billing Tips
- Verify benefits first. Confirm coverage and, importantly, whether the excision is adjudicated under medical rather than dental — malignant cases very often cross-code to medical.
- Document the size and malignancy. Record the diameter and attach pathology confirming malignancy — both drive correct coding and approval.
- Check medical cross-coding. Many payers require submission to medical with the appropriate CPT crosswalk for malignant excisions.
- Bill pathology and reconstruction separately. The lab analysis and any reconstructive work have their own codes.
- Attach complete clinical support. Pathology, narrative, and imaging support medical necessity and reduce denials on a closely reviewed procedure.
Example Case
A patient is referred after a prior incisional biopsy confirmed a small malignant lesion, about 1.0 cm, on the floor of the mouth. The oral surgeon completely excises the malignant tumor with appropriate margins and submits the specimen to pathology. Because the lesion was malignant and measured under 1.25 cm, the excision is reported as D7440, with the confirming pathology and a surgical narrative attached. Since the case is cancer-related, the office verifies whether it routes to the medical plan and cross-codes accordingly so the claim is submitted to the correct payer.
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Frequently Asked Questions
How is D7440 different from D7441 and D7410?
The differences are size and behavior. D7440 is excision of a malignant tumor up to 1.25 cm; D7441 is the same procedure for a malignant tumor larger than 1.25 cm. If the lesion is benign, you use D7410 (up to 1.25 cm) or D7411 (larger) instead. Both the measured diameter and the malignant-versus-benign diagnosis must be confirmed before coding, so the supporting pathology and the documented size are essential.
Does D7440 include the pathology fee or count as a biopsy?
No on both. D7440 covers the surgical excision of the malignant tumor; any pathology laboratory analysis is billed separately, usually by the lab. D7440 is also an excision, meaning the entire tumor is removed — it is not an incisional biopsy. When only part of a lesion is sampled to establish the diagnosis, the incisional biopsy codes D7285 (hard) or D7286 (soft) apply instead.
Is D7440 covered by dental or medical insurance?
Malignant tumor excisions are very frequently adjudicated under the patient's medical plan because they are treated as medically necessary cancer care, though some may process under dental. Verify coverage in advance and ask whether the claim must be cross-coded to medical with a CPT equivalent. Confirming the path before treatment is especially important for malignant cases to avoid denials and delays.
Does D7440 require pre-authorization?
Pre-authorization or a pre-treatment estimate is commonly recommended for malignant excisions because payers review them closely. Submitting the confirming pathology, the documented diameter, imaging, and a surgical narrative establishes medical necessity, clarifies whether the claim routes to medical, and reduces the chance of a denial on a high-scrutiny procedure.
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