Coding Strategy

Relying on the physician’s encounter form could be a big mistake.

Question: I used 491.9 to report a patient’s bronchitis, but the payer denied my claim and requested additional information. What was wrong?

Vermont Subscriber

Answer: Your claim may have been denied because you chose an unspecified chronic bronchitis code (491.9, Unspecified chronic bronchitis) instead of a more specific ICD-9 code.

Here’s how to avoid “diagnosis coding” denials next time: Don’t rely on the physician’s encounter form, which usually lists nonspecific diagnoses to maximize space. Your physician’s documentation may actually be more specific.

For instance, your physician has recorded that treatment for an “acute exacerbation” of chronic bronchitis was provided. The term “acute” under 491.21 (Obstructive chronic bronchitis; with [acute] exacerbation) appears in the diagnosis definition. Therefore, if the physician sees a patient with an exacerbation of chronic bronchitis, you may report 491.21.

Snag: You may find your doctor unaware that proper documentation is critical. You should suggest that the pulmonologist be more specific on the terms and descriptions used in the chart when appropriate, and that, without proper documentation, unspecified codes may delay and/or reduce payment.

Smart: ICD-10-CM will prompt you for more specified coding. It’s important to incorporate specificity into your coding and documentation — as early as now.

@ Pulmonology Coding Alert

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Reading 44373’s code descriptor is key to getting your G Tube claim right.

Question: The gastroenterologist goes to the hospital to treat a patient that had recently been admitted because his gastrojejunostomy tube had migrated to his stomach. After performing a problem focused interval history and exam, the gastroenterologist decides to perform an EGD to reposition the tube. I cannot find a code for repositioning a G tube; how should I code this scenario?

Answer: Judging by your encounter description, the patient’s percutaneous jejunostomy tube (J tube) slipped and became a percutaneous gastrostomy tube (G tube). On the claim, report the following:

• 44373 (Small intestinal endoscopy, enteroscopy beyond second portion of duodenum, not including ileum; with conversion of percutaneousgastrostomy tube to a percutaneous jejunostomy tube) for the EGD;
• 99231 (Subsequent hospital care, per day, for the evaluation and management of a patient, which requires at least 2 of these 3 key components: a problem focused interval history; a problem focused examination; medical decision making that is straightforward or of low complexity …) for the E/M;
• modifier 25 (Significant, separately identifiable evaluation and management service by the same physician on the same day of the procedure or other service) appended to 99231 to show that the E/M and tube fix were separate services; and
• 536.42 (Disorders of function of stomach; gastrostomy complications; mechanical complication of gastrostomy) appended to 44373 and 99231 to represent the patient’s condition.

Explanation: The descriptor for 44373 might be a bit misleading, but it mentions only “tube conversion.” The tube does not necessarily have to be new.

@ Gastroenterology Coding Alert

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