AMA CPT® Assistant - 1998 Issue 12 (December)

Integumentary System/Excision, 11400-11646 (Q&A) (December 1998)

December 1998 page 10d Coding Consultation Integumentary System/Excision, 11400-11646 (Q&A) Question CPT codes 11400-11646 are based on the lesion diameter. How is excision of a lesion calculated when the diameter of the lesion is not circular? AMA Comment The size of a lesion is measured by its diameter in a circular or elliptical lesion. If the lesion is asymmetrical or irregular, the maximum width is used to measure the lesion. For example, if an asymmetrical benign lesion, measuring 1.0 cm x 2.0 cm, is excised from the neck, the correct code is 11422, Excision, benign lesion...

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CPT® Assistant content is the official source for CPT® coding guidance. It is an instrumental tool when appealing insurance denials and validating coding to auditors. Monthly issues and an extensive archive provide comprehensive guidance on proper CPT® coding for past, present and upcoming code set releases. Archives date back to 1990 for historical use of codes, changes, rationales, coding tips and trends in the industry.

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