If you mistake modifiers 52 and 53 as one or the other because they’re both used for incomplete procedures, you’ll end up losing your reimbursement. Remember these two have extremely distinctive functions.

Consider a situation when the gastroenterologist performs an esophagogastroduodenoscopy (EGD) to examine the lining of the esophagus, stomach, and upper duodenum of a patient as part of a GERD evaluation.

Suppose that while inserting the endoscope, the patient registers unstable vital signs. The gastroenterologist, then, decides it is not in the patient’s best interest to continue the procedure. You would report this on your claim using:

• 43235 (Upper gastrointestinal endoscopy including esophagus, stomach, and either the duodenum and/or jejunum as appropriate; diagnostic, with or without collection of specimen[s] by brushing or washing [separate procedure]) for the EDG
• Modifier 53 (Discontinued procedure) to show that the GI discontinued the EGD.

Other situations that would call for a discontinued procedure include respiratory distress (786.09), hypoxia (799.02), irregular heart rhythm (427.9), and others usually related to the sedation medications.

Modifier 53 Defined: Under certain circumstances, the physician may elect to terminate a surgical or diagnostic procedure. Due to extenuating circumstances, or those that threaten the well-being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued.

In addition, you shouldn’t disregard the importance of submitting documentation that shows:

• that the physician began the procedure;
• why the procedure was discontinued;
• the percentage of the procedure performed.

Taking on the same scenario, the gastroenterologist begins the diagnostic EGD but stopped without examining the entire upper gastrointestinal tract because she encounters an obstructing lesion in the middle of the stomach. In this case, you should attach modifier 52 to the CPT, says Margaret Lamb, RHIT, CPC, of Great Falls Clinic...