We are seeking clarification on whether we can use modifier RT and LT on codes 0598T and 0599T . The physician performs fluorescence imaging of bacteria to identify bacteria presence, location, and load, and reports code 0598T for a chronic wound on the interior aspect of the right calf measuring 3.5 x 4.5 cm. During the same session, the physician performs fluorescence imaging of bacteria to identify bacteria presence, location, and load on a chronic wound of the external aspect of the left thigh measuring 5.6 x 7.8cm and reports code 0599T . Wound images and treatment planning for both wounds are documented. In the above scenario, can 0598T be reported with modifier RT and code 0599T with modifier LT on the claim submitted to the insurer? ...

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Note:  The following article synopsis was NOT provided by the AMA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article addresses a practical coding question involving CPT wound imaging services and whether laterality modifiers may be accepted by payers. It is relevant to coders, billers, and revenue cycle staff who work with wound care and payer-specific claim submission policies. The discussion also notes broader guidance from CPT changes and mentions the possible role of diagnosis coding when laterality is supported.

Why This Topic Matters

Understanding whether a payer accepts laterality modifiers on these services can affect claim submission, documentation alignment, and denials management. The article helps readers identify that the issue is payer-dependent and that coding support may also come from diagnosis coding and CPT guidance.

Codes Discussed

• CPT: 0598T
• CPT: 0599T

Modifiers Discussed

• CPT: RT
• CPT: LT

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